code: func (m *Messenger) GetProfile(userID string) (*Profile, error) {
  	resp, err := m.doRequest("GET", fmt.Sprintf(GraphAPI+"/v2.6/%s?fields=first_name,last_name,profile_pic,locale,timezone,gender", userID), nil)
  	if err != nil {
  		return nil, err
  	}
  	defer resp.Body.Close()
  	read, err := ioutil.ReadAll(resp.Body)
  	if resp.StatusCode != http.StatusOK {
  		er := new(rawError)
  		json.Unmarshal(read, er)
  		return nil, errors.New("Error occured: " + er.Error.Message)
  	}
  	profile := new(Profile)
  	return profile, json.Unmarshal(read, profile)
  }
docs: // GetProfile fetches the recipient's profile from facebook platform
  // Non empty UserID has to be specified in order to receive the information