Trying to get salesforce auth with OWIN working

ExternalLoginConfirmation.cs

//
// POST: /Account/ExternalLoginConfirmation
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
{
    if (User.Identity.IsAuthenticated)
    {
        return RedirectToAction("Manage");
    }

    if (ModelState.IsValid)
    {
        // Get the information about the user from the external login provider
        var info = await AuthenticationManager.GetExternalLoginInfoAsync();
        if (info == null)
        {
            return View("ExternalLoginFailure");
        }
        var user = new ApplicationUser() { UserName = model.UserName };
        var result = await UserManager.CreateAsync(user);
        if (result.Succeeded)
        {
            await StoreAuthTokenClaims(user);

            result = await UserManager.AddLoginAsync(user.Id, info.Login);
            if (result.Succeeded)
            {
                await SignInAsync(user, isPersistent: false);
                return RedirectToLocal(returnUrl);
            }
        }
        AddErrors(result);
    }

    ViewBag.ReturnUrl = returnUrl;
    return View(model);
}

HomeController.cs

[Authorize]
public ActionResult Index()
{
    var claimsIdentity = HttpContext.User.Identity as ClaimsIdentity;
    if (claimsIdentity != null)
    {
        var claims = claimsIdentity.Claims;
    }

    return View();
}

Start.cs

app.UseSalesforceAuthentication(
    clientId: "3MVG9xOCXq4ID1uECprHw9yA2eqjHLXvdWPz6d.ssZZsq7fwKp2QcqPGQTwnqaRsEZWtfbv3WsKQBMnY94xaQ",
    clientSecret: "1716505757715014836");

StoreAuthTokenClaims.cs

private async Task StoreAuthTokenClaims(ApplicationUser user)
{
    // Get the claims identity
    ClaimsIdentity claimsIdentity =
        await AuthenticationManager.GetExternalIdentityAsync(DefaultAuthenticationTypes.ExternalCookie);

    if (claimsIdentity != null)
    {
        // Retrieve the existing claims
        var currentClaims = await UserManager.GetClaimsAsync(user.Id);

        // Get the list of access token related claims from the identity
        var tokenClaims = claimsIdentity.Claims
            .Where(c => c.Type.StartsWith("urn:tokens:"));

        // Save the access token related claims
        foreach (var tokenClaim in tokenClaims)
        {
            if (!currentClaims.Contains(tokenClaim))
            {
                await UserManager.AddClaimAsync(user.Id, tokenClaim);
            }
        }
    }
}