'Create user notification'

@requires_auth
@replace_event_id
@can_create(DAO)
@api.doc('create_user_notification', responses=POST_RESPONSES)
@api.marshal_with(NOTIFICATION)
@api.expect(NOTIFICATION_POST)
def post(self, event_id):

    return (DAO.create_user_notify(self.api.payload), 201)
