public async Task<IActionResult> RemoveLogin(RemoveLoginViewModel account)
 {
     ManageMessageId? message = ManageMessageId.Error;
     var user = await GetCurrentUserAsync();
     if (user != null)
     {
         var result = await _userManager.RemoveLoginAsync(user, account.LoginProvider, account.ProviderKey);
         if (result.Succeeded)
         {
             await _signInManager.SignInAsync(user, isPersistent: false);
             message = ManageMessageId.RemoveLoginSuccess;
         }
     }
     return RedirectToAction(nameof(ManageLogins), new { Message = message });
 }