title: Instagram user_id for facebook graph
body: <p>The thing seems very stupid but instagram hashtag search endpoint requires user_id param.
  How do i get that user_id from login or from my account ?</p>
  
  <p>I've been searching for it for very long time and nothing seems to works as Graph API Explorer always returns <code>error code 100</code> with message:</p>
  
  <blockquote>
    <p>"(#100) Param user_id is not a valid Instagram User ID"</p>
  </blockquote>