code: func (wc *WebhookContext) RAW() (*[]byte, error) {
  	var err error
  	if wc.body == nil {
  		wc.firstParse = true
  		wc.body, err = ioutil.ReadAll(wc.gin.Request.Body)
  		if err != nil {
  			return nil, err
  		}
  	}
  	return &wc.body, nil
  }
docs: // RAW returns request's body