How to use token based authentication for GET and Post Methods and also subsequent methods in asp.net
Have a look here for JSon Web Token authentication, and how to still use the authorise attribute but not cookie based auth.
http://bitoftech.net/2015/01/21/asp-net-identity-2-with-asp-net-web-api-2-accounts-management/
Its a 5 part tutorial, and it works really well!