diff --git a/examples/webhook_verification_PSR7.php b/examples/webhook_verification_PSR7.php
index 9e25cd2..25c2159 100644
--- a/examples/webhook_verification_PSR7.php
+++ b/examples/webhook_verification_PSR7.php
@@ -11,6 +11,9 @@
  */
 
 use GuzzleHttp\Psr7\ServerRequest;
+use Paddle\SDK\Entities\Event;
+use Paddle\SDK\Entities\Transaction;
+use Paddle\SDK\Notifications\Events\TransactionUpdated;
 use Paddle\SDK\Notifications\Secret;
 use Paddle\SDK\Notifications\Verifier;
 
@@ -21,6 +24,18 @@
 
 if ($isVerified) {
     echo "Webhook is verified\n";
+
+    $event = Event::fromRequest($request);
+    $id = $event->notificationId;
+    $eventId = $event->eventId;
+    $eventType = $event->eventType;
+    $occurredAt = $event->occurredAt;
+
+    if ($event instanceof TransactionUpdated) {
+        /** @var Transaction $transaction */
+        $transaction = $event->data;
+        $transactionId = $transaction->id;
+    }
 } else {
     echo "Webhook is not verified\n";
 }
diff --git a/src/Entities/Event.php b/src/Entities/Event.php
index 92bd3a1..6b11c2a 100644
--- a/src/Entities/Event.php
+++ b/src/Entities/Event.php
@@ -6,17 +6,16 @@
 
 use Paddle\SDK\Entities\Event\EventTypeName;
 use Paddle\SDK\Notifications\Entities\Entity as NotificationEntity;
+use Psr\Http\Message\ServerRequestInterface;
 
 abstract class Event implements Entity
 {
-    /**
-     * @internal
-     */
     protected function __construct(
         public string $eventId,
         public EventTypeName $eventType,
         public \DateTimeInterface $occurredAt,
         public NotificationEntity $data,
+        public string|null $notificationId = null,
     ) {
     }
 
@@ -45,13 +44,24 @@ public static function from(array $data): self
             EventTypeName::from($data['event_type']),
             DateTime::from($data['occurred_at']),
             $entity::from($data['data']),
+            $data['notification_id'] ?? null,
         );
     }
 
+    public static function fromRequest(ServerRequestInterface $request): self
+    {
+        return self::from(json_decode(
+            (string) $request->getBody(),
+            true,
+            JSON_THROW_ON_ERROR,
+        ));
+    }
+
     abstract public static function fromEvent(
         string $eventId,
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         NotificationEntity $data,
+        string|null $notificationId = null,
     ): static;
 }
diff --git a/src/Notifications/Events/AddressCreated.php b/src/Notifications/Events/AddressCreated.php
index aab43b4..21b2416 100644
--- a/src/Notifications/Events/AddressCreated.php
+++ b/src/Notifications/Events/AddressCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Address $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/AddressUpdated.php b/src/Notifications/Events/AddressUpdated.php
index 5f6eb9b..8980671 100644
--- a/src/Notifications/Events/AddressUpdated.php
+++ b/src/Notifications/Events/AddressUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Address $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/AdjustmentCreated.php b/src/Notifications/Events/AdjustmentCreated.php
index a9cbb9b..0aa7f20 100644
--- a/src/Notifications/Events/AdjustmentCreated.php
+++ b/src/Notifications/Events/AdjustmentCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Adjustment $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/AdjustmentUpdated.php b/src/Notifications/Events/AdjustmentUpdated.php
index 38de8bd..28f4502 100644
--- a/src/Notifications/Events/AdjustmentUpdated.php
+++ b/src/Notifications/Events/AdjustmentUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Adjustment $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/BusinessCreated.php b/src/Notifications/Events/BusinessCreated.php
index aaa3166..46d9bee 100644
--- a/src/Notifications/Events/BusinessCreated.php
+++ b/src/Notifications/Events/BusinessCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Business $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/BusinessUpdated.php b/src/Notifications/Events/BusinessUpdated.php
index c8cbf0c..f79ecb5 100644
--- a/src/Notifications/Events/BusinessUpdated.php
+++ b/src/Notifications/Events/BusinessUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Business $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/CustomerCreated.php b/src/Notifications/Events/CustomerCreated.php
index bcb366a..f2e3fa1 100644
--- a/src/Notifications/Events/CustomerCreated.php
+++ b/src/Notifications/Events/CustomerCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Customer $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/CustomerUpdated.php b/src/Notifications/Events/CustomerUpdated.php
index 23d2749..fca4565 100644
--- a/src/Notifications/Events/CustomerUpdated.php
+++ b/src/Notifications/Events/CustomerUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Customer $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/DiscountCreated.php b/src/Notifications/Events/DiscountCreated.php
index eb982ca..34f3e83 100644
--- a/src/Notifications/Events/DiscountCreated.php
+++ b/src/Notifications/Events/DiscountCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Discount $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/DiscountImported.php b/src/Notifications/Events/DiscountImported.php
index 127450a..d2cedfa 100644
--- a/src/Notifications/Events/DiscountImported.php
+++ b/src/Notifications/Events/DiscountImported.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Discount $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/DiscountUpdated.php b/src/Notifications/Events/DiscountUpdated.php
index 9fb296b..db1dbb0 100644
--- a/src/Notifications/Events/DiscountUpdated.php
+++ b/src/Notifications/Events/DiscountUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Discount $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/PayoutCreated.php b/src/Notifications/Events/PayoutCreated.php
index afa3bb4..11ec54a 100644
--- a/src/Notifications/Events/PayoutCreated.php
+++ b/src/Notifications/Events/PayoutCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Payout $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/PayoutPaid.php b/src/Notifications/Events/PayoutPaid.php
index 82bd3dc..8c16997 100644
--- a/src/Notifications/Events/PayoutPaid.php
+++ b/src/Notifications/Events/PayoutPaid.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Payout $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/PriceCreated.php b/src/Notifications/Events/PriceCreated.php
index fa8f870..971b01c 100644
--- a/src/Notifications/Events/PriceCreated.php
+++ b/src/Notifications/Events/PriceCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Price $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/PriceUpdated.php b/src/Notifications/Events/PriceUpdated.php
index a6e8350..c95e5dd 100644
--- a/src/Notifications/Events/PriceUpdated.php
+++ b/src/Notifications/Events/PriceUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Price $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/ProductCreated.php b/src/Notifications/Events/ProductCreated.php
index 1be7ad2..628db11 100644
--- a/src/Notifications/Events/ProductCreated.php
+++ b/src/Notifications/Events/ProductCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Product $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/ProductUpdated.php b/src/Notifications/Events/ProductUpdated.php
index 1b38299..5b23a8f 100644
--- a/src/Notifications/Events/ProductUpdated.php
+++ b/src/Notifications/Events/ProductUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Product $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/ReportCreated.php b/src/Notifications/Events/ReportCreated.php
index 063081b..6ac5285 100644
--- a/src/Notifications/Events/ReportCreated.php
+++ b/src/Notifications/Events/ReportCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Report $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/ReportUpdated.php b/src/Notifications/Events/ReportUpdated.php
index 15ae4f0..c437f69 100644
--- a/src/Notifications/Events/ReportUpdated.php
+++ b/src/Notifications/Events/ReportUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Report $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionActivated.php b/src/Notifications/Events/SubscriptionActivated.php
index 39746ae..4098edd 100644
--- a/src/Notifications/Events/SubscriptionActivated.php
+++ b/src/Notifications/Events/SubscriptionActivated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionCanceled.php b/src/Notifications/Events/SubscriptionCanceled.php
index 0d7ee51..9103629 100644
--- a/src/Notifications/Events/SubscriptionCanceled.php
+++ b/src/Notifications/Events/SubscriptionCanceled.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionCreated.php b/src/Notifications/Events/SubscriptionCreated.php
index c47ca12..5e1c311 100644
--- a/src/Notifications/Events/SubscriptionCreated.php
+++ b/src/Notifications/Events/SubscriptionCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionImported.php b/src/Notifications/Events/SubscriptionImported.php
index f228530..68925a0 100644
--- a/src/Notifications/Events/SubscriptionImported.php
+++ b/src/Notifications/Events/SubscriptionImported.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionPastDue.php b/src/Notifications/Events/SubscriptionPastDue.php
index 8864405..3cc5329 100644
--- a/src/Notifications/Events/SubscriptionPastDue.php
+++ b/src/Notifications/Events/SubscriptionPastDue.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionPaused.php b/src/Notifications/Events/SubscriptionPaused.php
index 78c3497..4266c19 100644
--- a/src/Notifications/Events/SubscriptionPaused.php
+++ b/src/Notifications/Events/SubscriptionPaused.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionResumed.php b/src/Notifications/Events/SubscriptionResumed.php
index 9071fee..163570b 100644
--- a/src/Notifications/Events/SubscriptionResumed.php
+++ b/src/Notifications/Events/SubscriptionResumed.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionTrialing.php b/src/Notifications/Events/SubscriptionTrialing.php
index 13519d2..a91931a 100644
--- a/src/Notifications/Events/SubscriptionTrialing.php
+++ b/src/Notifications/Events/SubscriptionTrialing.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/SubscriptionUpdated.php b/src/Notifications/Events/SubscriptionUpdated.php
index bb5b526..1817227 100644
--- a/src/Notifications/Events/SubscriptionUpdated.php
+++ b/src/Notifications/Events/SubscriptionUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Subscription $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionBilled.php b/src/Notifications/Events/TransactionBilled.php
index 474e3a5..3ab1c36 100644
--- a/src/Notifications/Events/TransactionBilled.php
+++ b/src/Notifications/Events/TransactionBilled.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionCanceled.php b/src/Notifications/Events/TransactionCanceled.php
index cb28a30..e18dd05 100644
--- a/src/Notifications/Events/TransactionCanceled.php
+++ b/src/Notifications/Events/TransactionCanceled.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionCompleted.php b/src/Notifications/Events/TransactionCompleted.php
index 83d0271..c73cdcb 100644
--- a/src/Notifications/Events/TransactionCompleted.php
+++ b/src/Notifications/Events/TransactionCompleted.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionCreated.php b/src/Notifications/Events/TransactionCreated.php
index ded7eab..3dd3ae2 100644
--- a/src/Notifications/Events/TransactionCreated.php
+++ b/src/Notifications/Events/TransactionCreated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionPaid.php b/src/Notifications/Events/TransactionPaid.php
index 1517279..cc06d4d 100644
--- a/src/Notifications/Events/TransactionPaid.php
+++ b/src/Notifications/Events/TransactionPaid.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionPastDue.php b/src/Notifications/Events/TransactionPastDue.php
index 5700484..f3052b1 100644
--- a/src/Notifications/Events/TransactionPastDue.php
+++ b/src/Notifications/Events/TransactionPastDue.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionPaymentFailed.php b/src/Notifications/Events/TransactionPaymentFailed.php
index 2eabd3a..f8ad64d 100644
--- a/src/Notifications/Events/TransactionPaymentFailed.php
+++ b/src/Notifications/Events/TransactionPaymentFailed.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionReady.php b/src/Notifications/Events/TransactionReady.php
index 09fad11..778e829 100644
--- a/src/Notifications/Events/TransactionReady.php
+++ b/src/Notifications/Events/TransactionReady.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/src/Notifications/Events/TransactionUpdated.php b/src/Notifications/Events/TransactionUpdated.php
index e2a2caa..822615c 100644
--- a/src/Notifications/Events/TransactionUpdated.php
+++ b/src/Notifications/Events/TransactionUpdated.php
@@ -16,8 +16,9 @@ private function __construct(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Transaction $data,
+        string|null $notificationId,
     ) {
-        parent::__construct($eventId, $eventType, $occurredAt, $data);
+        parent::__construct($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 
     /**
@@ -28,7 +29,8 @@ public static function fromEvent(
         EventTypeName $eventType,
         \DateTimeInterface $occurredAt,
         Entity $data,
+        string|null $notificationId = null,
     ): static {
-        return new self($eventId, $eventType, $occurredAt, $data);
+        return new self($eventId, $eventType, $occurredAt, $data, $notificationId);
     }
 }
diff --git a/tests/Unit/Entities/EventTest.php b/tests/Unit/Entities/EventTest.php
new file mode 100644
index 0000000..c5d3b97
--- /dev/null
+++ b/tests/Unit/Entities/EventTest.php
@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Paddle\SDK\Tests\Unit\Entities;
+
+use Paddle\SDK\Entities\Event;
+use Paddle\SDK\Notifications\Entities\Business;
+use Paddle\SDK\Notifications\Entities\Entity;
+use Paddle\SDK\Notifications\Events\BusinessUpdated;
+use Paddle\SDK\Tests\Utils\ReadsFixtures;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Message\StreamInterface;
+
+class EventTest extends TestCase
+{
+    use ReadsFixtures;
+
+    /** @test */
+    public function it_creates_from_data(): void
+    {
+        $data = self::readJsonFixture('notification_business_updated');
+
+        $event = Event::from($data);
+
+        self::assertSame('ntf_01h8bzam1z32agrxjwhjgqk8w6', $event->notificationId);
+
+        self::assertInstanceOf(BusinessUpdated::class, $event);
+        self::assertInstanceOf(Entity::class, $event->data);
+        self::assertSame('evt_01h8bzakzx3hm2fmen703n5q45', $event->eventId);
+        self::assertSame('2023-08-21T11:57:47.390+00:00', $event->occurredAt->format(DATE_RFC3339_EXTENDED));
+        self::assertSame('business.updated', $event->eventType->getValue());
+
+        $business = $event->data;
+        self::assertInstanceOf(Business::class, $business);
+        self::assertSame('biz_01h84a7hr4pzhsajkm8tev89ev', $business->id);
+        self::assertSame('ChatApp Inc.', $business->name);
+        self::assertSame('active', $business->status->getValue());
+    }
+
+    /** @test */
+    public function it_creates_from_request(): void
+    {
+        $requestStream = $this->createMock(StreamInterface::class);
+        $requestStream
+            ->method('__toString')
+            ->willReturn(self::readRawJsonFixture('notification_business_updated'));
+
+        $request = $this->createMock(ServerRequestInterface::class);
+        $request
+            ->method('getBody')
+            ->willReturn($requestStream);
+
+        $notification = Event::fromRequest($request);
+
+        self::assertSame('ntf_01h8bzam1z32agrxjwhjgqk8w6', $notification->notificationId);
+    }
+}
diff --git a/tests/Unit/Entities/_fixtures/notification_business_updated.json b/tests/Unit/Entities/_fixtures/notification_business_updated.json
new file mode 100644
index 0000000..c3c93c8
--- /dev/null
+++ b/tests/Unit/Entities/_fixtures/notification_business_updated.json
@@ -0,0 +1,29 @@
+{
+  "data": {
+    "id": "biz_01h84a7hr4pzhsajkm8tev89ev",
+    "name": "ChatApp Inc.",
+    "status": "active",
+    "contacts": [
+      {
+        "name": "Parker Jones",
+        "email": "parker@example.com"
+      },
+      {
+        "name": "Jo Riley",
+        "email": "jo@example.com"
+      },
+      {
+        "name": "Jesse Garcia",
+        "email": "jo@example.com"
+      }
+    ],
+    "created_at": "2023-08-18T12:34:25.668Z",
+    "updated_at": "2023-08-21T11:57:47.03542Z",
+    "company_number": "555775291485",
+    "tax_identifier": null
+  },
+  "event_id": "evt_01h8bzakzx3hm2fmen703n5q45",
+  "event_type": "business.updated",
+  "occurred_at": "2023-08-21T11:57:47.390028Z",
+  "notification_id": "ntf_01h8bzam1z32agrxjwhjgqk8w6"
+}