var claims = new List<Claim>();
claims.Add(new Claim(ClaimTypes.Name,"Brock"));
claims.Add(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);