var token = GetAccessToken();
var apiClient = new ManagementApiClient(token, new Uri("https://ctmtestsso.au.auth0.com/api/v2"));
var user = await apiClient.Users.GetAsync(id);
var u = await apiClient.Users.
var userModel = MapUserToUserModel(user);
return View(userModel);

var token = GetAccessToken();
var apiClient = new ManagementApiClient(token, new Uri("https://ctmtestsso.au.auth0.com/api/v2"));
var updateReq = new UserUpdateRequest()
{
    UserName = model.UserId,
    Email = model.Email,
    Password = model.Password,
    EmailVerified = model.EmailVerified,
    AppMetadata = model.AppMetadata,
    UserMetadata = model.UserMetadata
};

var user = await apiClient.Users.UpdateAsync(model.UserId, updateReq);