title: Google Drive API watch channel is only 24h
body: <p>I am using the v3 api drive file watch api. I just want to subscribe to the changes made in specific folders. I was able to establish the watch channel. However, the expiration date I receive is only 24h even when I set it manually to 7 days.</p>
  <pre><code>var expirationWatchTime = DateTimeOffset.UtcNow.AddDays(7);
  var channel = DriveService.Files.Watch(
                  new Channel
                  {
                      Address = _googleConfiguration.Value.WebHookUrl,
                      Type = &quot;web_hook&quot;,
                      Id = projectDocumentFolderId.ToString(),
                      Expiration = expirationWatchTime.ToUnixTimeMilliseconds()
                  },
                  missingFolder.Id).Execute();
  </code></pre>