code: func (account *Account) SetBiography(bio string) error {
  	account.edit() // preparing to edit
  	insta := account.inst
  	data, err := insta.prepareData(
  		map[string]interface{}{
  			"raw_text": bio,
  		},
  	)
  	if err != nil {
  		return err
  	}
  
  	body, err := insta.sendRequest(
  		&reqOptions{
  			Endpoint: urlSetBiography,
  			Query:    generateSignature(data),
  			IsPost:   true,
  		},
  	)
  	if err == nil {
  		var resp struct {
  			User struct {
  				Pk        int64  `json:"pk"`
  				Biography string `json:"biography"`
  			} `json:"user"`
  			Status string `json:"status"`
  		}
  		err = json.Unmarshal(body, &resp)
  		if err == nil {
  			account.Biography = resp.User.Biography
  		}
  	}
  	return err
  }
docs: // SetBiography changes your Instagram's biography.
  //
  // This function updates current Account information.