title: Getting user's facebook fan page information such as likes count and followers
body: <p>I am new to FB development trying to build a solution to get the number of facebook likes on the user's fan-page using facebook authentication (by providing an option to authorize our facebook app which can get the authorized user's access token).
  ex:<a href="https://graph.facebook.com/FANPAGE_ID?access_token=ACCESS_TOKEN&amp;fields=name,fan_count" rel="nofollow noreferrer">https://graph.facebook.com/FANPAGE_ID?access_token=ACCESS_TOKEN&amp;fields=name,fan_count</a></p>
  
  <p>The problem is ,i have no idea how to get the access token of the fan-page, which provide access to the user's fan page (likes count) using any API methods .</p>
  
  <p>However ,i have integrated successfully social sign-in using the following link.
  <a href="https://www.npmjs.com/package/angular4-social-login" rel="nofollow noreferrer">https://www.npmjs.com/package/angular4-social-login</a>.</p>
  
  <p>So please guide me a way to access the users(who authorized our fb app) facebook fan page likes count .</p>
  
  <p>Thanks in advance</p>