title: Google Drive API V3 - Push Notifications
body: <p>Since Yesterday morning I'm stuck with a google drive API request.</p>
  
  <p>As explained here : <a href="https://developers.google.com/drive/api/v3/push" rel="nofollow noreferrer">https://developers.google.com/drive/api/v3/push</a></p>
  
  <p>I'm trying to subscribe to notifications sending this request :</p>
  
  <p>Url :  <a href="https://www.googleapis.com/drive/v3/changes/watch" rel="nofollow noreferrer">https://www.googleapis.com/drive/v3/changes/watch</a></p>
  
  <pre><code>Header :
  Content-type: application/json
  Authorization: Bearer my_auth_token
  
  {
  "id":"An ID generated",
  "type":"web_hook",
  "address":"my callback address",
  }
  </code></pre>
  
  <p>The response is a code 400 with this body :</p>
  
  <pre><code>{
   "error": {
    "errors": [
     {
      "domain": "global",
      "reason": "required",
      "message": "Required parameter: pageToken",
      "locationType": "parameter",
      "location": "pageToken"
     }
    ],
    "code": 400,
    "message": "Required parameter: pageToken"
   }
  }
  </code></pre>
  
  <p>This parameter isn't required according for this subscription request but for this one (same url..) : <a href="https://developers.google.com/drive/api/v3/reference/changes/watch" rel="nofollow noreferrer">https://developers.google.com/drive/api/v3/reference/changes/watch</a></p>
  
  <p>Am I missing / misunderstanding something or is there a problem with the documentation ?</p>
  
  <p>Thank you</p>