                  group: null,
                                received_message_id: "",
                                received_message_at: 0,
                            }
                        ]
                    }
                ],
                code: [{
                    service: 'newsletter-service',
                    code: `router.AddNoPublisherHandler(
    "OnUserSignedUp",
    "UserSignedUp",
    subscriber,
    func(msg *message.Message) error {
        var event common.UserSignedUp
   