diff --git a/prism-agent/service/server/src/main/scala/io/iohk/atala/issue/controller/http/IssueCredentialRecord.scala b/prism-agent/service/server/src/main/scala/io/iohk/atala/issue/controller/http/IssueCredentialRecord.scala
index 704ba3f662..2816a9c38a 100644
--- a/prism-agent/service/server/src/main/scala/io/iohk/atala/issue/controller/http/IssueCredentialRecord.scala
+++ b/prism-agent/service/server/src/main/scala/io/iohk/atala/issue/controller/http/IssueCredentialRecord.scala
@@ -115,11 +115,11 @@ object IssueCredentialRecord {
         )
 
     object claims
-        extends Annotation[Map[String, String]](
+        extends Annotation[zio.json.ast.Json](
           description = "The claims that will be associated with the issued verifiable credential.",
-          example = Map(
-            "firstname" -> "Alice",
-            "lastname" -> "Wonderland"
+          example = zio.json.ast.Json.Obj(
+            "firstname" -> zio.json.ast.Json.Str("Alice"),
+            "lastname" -> zio.json.ast.Json.Str("Wonderland"),
           )
         )