MVC 4 OAuth集成。接下来是什么以及如何从数据提供者那里获取任何信息？

I found a lot of posts and articles with very detailed information about how to configure MVC 4 application to be integrated with any social network provider and how to authenticate users, but what's next? How to get any information about authenticated user, for example? The simplest task that coming to my head how to get some information about authenticated user - first name, last name, avatar's url, friends list etc.? I found a lot of posts and articles with very d