JSONB in ​​Hibernate?

Question

Hibernate

You need to make Hibernate friends with PostgreSQL, I do it as follows:
Define your UserType

public class JSONType implements UserType {

    @Override
    public int[] sqlTypes() {
        return new int[]{Types.JAVA_OBJECT};
    }

    @Override
    public Class<JSONObject/*MyJson*/> returnedClass() {
        return JSONObject.class;
    }

....

}

I specify the type and the class to it

@org.hibernate.annotations.TypeDef(name = "JSONType", typeClass = JSONObject.class)

In Entity one of the fields

@Column
    @Type(type = "JSONType")
    private JSONObject data;

And finally I add the type to the dialect

public class MyPostgreSQL94Dialect extends PostgreSQL94Dialect {

    public MyPostgreSQL94Dialect() {
        this.registerColumnType(Types.JAVA_OBJECT, "jsonb");
    }
}

(of course I specify it in persistence.xml
But it turns out the following:
the table is generated with the type "byte"

What could be the error?