title: Exchanging OAuth2 Access token with user info
body: <p>I'm trying to implement OAuth authentication for my application which consist of a frontend and bunch of microservices. </p>
  
  <p>I'm plan to use - <a href="http://getkong.org" rel="nofollow">kong</a> and it's my firstime implementing oAuth but wondering how do I exchange the access_token to get the user info ?</p>
  
  <p>Thanks</p>