code: func (s *APIServer) getSignupTokenData(auth ClientI, w http.ResponseWriter, r *http.Request, p httprouter.Params, version string) (interface{}, error) {
  	token := p.ByName("token")
  
  	user, otpQRCode, err := auth.GetSignupTokenData(token)
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  
  	return &getSignupTokenDataResponse{
  		User:  user,
  		QRImg: otpQRCode,
  	}, nil
  }
docs: // getSignupTokenData returns the signup data for a token.