     err := json.Unmarshal(msg.Payload, &event)
        if err != nil {
            return err
        }

        if !event.Consents.Marketing {
            return nil
        }

        fmt.Println("Adding user", event.UserID, "to the promotions list")

        return nil
    },
)`,
                }, {
                    service: 'crm-service',
                    code: `router.AddNoPublisherHandler(
    "OnUserSignedUp",
    "UserSignedUp",
    subscriber,
    func(msg *message.Message) error {
        