MVC 5 OWIN login with claims and AntiforgeryToken. Do I miss a ClaimsIdentity provider?

I'm trying to learn Claims for MVC 5 OWIN login. I try'ed to keep it as simple as possible. I started with the MVC template and inserted my claims code (see below). I get an error when I use the @Html.AntiForgeryToken() helper in the View.

Error:

A claim of type 'http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier' or  
'http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovid    
er' was not present on the provided ClaimsIdentity. 

To enable anti-forgery token support with claims-based authentication, please verify that 
the configured claims provider is providing both of these claims on the ClaimsIdentity 
instances it generates. If the configured claims provider instead uses a different claim 
type as a unique identifier, it can be configured by setting the static property 
AntiForgeryConfig.UniqueClaimTypeIdentifier.

Exception Details: System.InvalidOperationException: A claim of type
'http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier' or 
'http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider' was 
not present on the provided ClaimsIdentity. To enable anti-forgery token
support with claims-based authentication, please verify that the configured claims provider 
is providing both of these claims on the ClaimsIdentity instances it generates. 
If the configured claims provider instead uses a different claim type as a unique 
identifier, it can be configured by setting the static property 
AntiForgeryConfig.UniqueClaimTypeIdentifier.

Source Error:
Line 4:      using (Html.BeginForm("LogOff", "Account", FormMethod.Post, new 
{ id = "logoutForm", @class = "navbar-right" }))
Line 5:      {
Line 6:      @Html.AntiForgeryToken()

POST Login action

// POST: /Account/Login
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
    if (!ModelState.IsValid)
    {
        return View(model);
    }

    var claims = new List<Claim>
    {
        new Claim(ClaimTypes.Name, "Brock"),
        new Claim(ClaimTypes.Email, "brockallen@gmail.com")
    };
    var id = new ClaimsIdentity(claims, DefaultAuthenticationTypes.ApplicationCookie);

    var ctx = Request.GetOwinContext();
    var authenticationManager = ctx.Authentication;
    authenticationManager.SignIn(id);

    return RedirectToAction("Welcome");
}

_LoginPartial.cshtml

@using Microsoft.AspNet.Identity
@if (Request.IsAuthenticated)
{
    using (Html.BeginForm("LogOff", "Account", FormMethod.Post, new { id = "logoutForm", @class = "navbar-right" }))
    {
    @Html.AntiForgeryToken()

    <ul class="nav navbar-nav navbar-right">
        <li>
            @Html.ActionLink("Hello " + User.Identity.GetUserName() + "!", "Index", "Manage", routeValues: null, htmlAttributes: new { title = "Manage" })
        </li>
        <li><a href="javascript:document.getElementById('logoutForm').submit()">Log off</a></li>
    </ul>
    }
}

I have tryed setting ClaimTypes.NameIdentifier (like in this SO answer)

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);

    AntiForgeryConfig.UniqueClaimTypeIdentifier = ClaimTypes.NameIdentifier;
}

And then I "only?" get this error

A claim of type 'http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier' was 
not present on the provided ClaimsIdentity.

I want to keep the antiforgeryToken because it can help against cross-site scripting.

Your claim identity does not have ClaimTypes.NameIdentifier, you should add more into claim array:

var claims = new List<Claim>
{
    new Claim(ClaimTypes.Name, "username"),
    new Claim(ClaimTypes.Email, "user@gmail.com"),
    new Claim(ClaimTypes.NameIdentifier, "userId"), //should be userid
};

To map the information to Claim for more corrective:

ClaimTypes.Name => map to username
ClaimTypes.NameIdentifier => map to user_id

Since username is unique also, so you are able to use username for anti-forgery token support.