Sample State

{

   entities: {
        users: {
            1: {
                id: 1,
                username: 'johnDoe',
                email: 'john@gmail.com'
            }
        },
        books: {
            101: {
                id: 101,
                title: 'A Little Life',
                author_id: 201
            }
        },
        authors: {
            201: {
                id: 201,
                name: 'Yanagihara, Hanya'
            }
        },
        ratings: {
            1: {
                id: 1,
                user_id: 1,
                book_id: 101,
                rating: 4
            }
        },
        reviews: {
            10: {
                id: 10,
                user_id: 1,
                book_id: 101,
                review_text: "Saddest book ever!!"
            }
        }
    },
    ui: {
        loading: true/false,
        modal: true/false
    },
    errors: {
        login: ["Invalid username or password."],
        reviewForm: ["Review text cannot be empty."]
    },
    session: {
        currentUserId: 1
    }

}