public async Task <ActionResult> Authenticate()
        {
            try
            {
                var token = await _service.GetRequestToken();

                _cookiesService.Save(_cookieKey, token);

                var uri = _service.GetAuthorizationUrl(token);
                return(new RedirectResult(uri));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex.Message);
                return(View("Error"));
            }
        }