title: Content-type application/json causes 415 Unsupported Media Type
body: <p>I am testing Forge API, and I have been able to complete requests smoothly for most endpoints, except the GET Hubs - I kept getting a 415 Unsupported Media Type.</p>
  
  <p>Strangely enough, after I remove the Content-Type header - which was the same header used for all the other end-points of <code>Content-Type:application/json</code> - 
  the request worked and returns a 200 with the correct data.</p>
  
  <p>Is there something about content-type I am not familiar with? 
  Shouldn't the first request work?</p>
  
  Request 1 - Returns 415 for hubs endpoint: no data
  
  <pre><code>GET https://developer.api.autodesk.com/project/v1/hubs HTTP/1.1
  Host: developer.api.autodesk.com
  Authorization: Bearer {{ACCESS_TOKEN}}
  Content-Type: application/json
  Cache-Control: no-cache
  </code></pre>
  
  Request 2 - Returns 200: data ok
  
  <pre><code>GET https://developer.api.autodesk.com/project/v1/hubs HTTP/1.1
  Host: developer.api.autodesk.com
  Authorization: Bearer {{ACCESS_TOKEN}}
  Cache-Control: no-cache
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/KgR9p.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KgR9p.png" alt="Request 1"></a>
  <a href="https://i.stack.imgur.com/GVopT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GVopT.png" alt="Request 2"></a></p>