title: Check user if authenticate using social media - IdentityServer4
body: <p>My Identity Server 4 can able to authenticate by using ASP.NET Identity and Social Media (Facebook, Google)</p>
  
  <p>Below the url to generate the token</p>
  
  <blockquote>
    <p><a href="http://localhost:5105/connect/token" rel="nofollow noreferrer">http://localhost:5105/connect/token</a></p>
  </blockquote>
  
  <p>So it will response </p>
  
  <pre><code>{
      "access_token": "{Bearer Token}",
      "expires_in": 3600,
      "token_type": "Bearer"
  }
  </code></pre>
  
  <p>Is that possible to add new property call <code>authenticate_type</code>? So I can know this user access by using social media or not.</p>
  
  <p>Example:</p>
  
  <p>If user authenticate by using Facebook</p>
  
  <pre><code>{
      "access_token": "{Bearer Token}",
      "expires_in": 3600,
      "token_type": "Bearer",
      "authenticate_type": "Facebook"
  }
  </code></pre>
  
  <p>If user authenticate by using Google</p>
  
  <pre><code>{
      "access_token": "{Bearer Token}",
      "expires_in": 3600,
      "token_type": "Bearer",
      "authenticate_type": "Google"
  }
  </code></pre>
  
  <p>and vice versa. Any idea how can be done?</p>