code: func (c *Connector) SendPushToUser(ctx context.Context, msg *UserMessage) (*Response, error) {
  	_, err := pitaya.SendPushToUsers("onMessage", msg, []string{"2"}, "connector")
  	if err != nil {
  		return nil, err
  	}
  	return &Response{
  		Code: 200,
  		Msg:  "boa",
  	}, nil
  }
docs: // SendPushToUser sends a push to a user