title: GMB API - Working with PubSub to get real time reviews notification
body: <p>I have integrated GMB API in our platform and working with PubSub to get realtime reviews notification. <br/>
  For which i have already done the following steps:
  <br/></p>
  
  <ol>
  <li><a href="https://cloud.google.com/pubsub/docs/quickstart-client-libraries" rel="noreferrer">Created topic</a> on google PubSub cloud.</li>
  <li>Created its <a href="https://cloud.google.com/pubsub/docs/admin" rel="noreferrer">subscription of push type</a> with a valid https url.</li>
  <li><a href="https://developers.google.com/my-business/reference/rest/v4/accounts/updateNotifications" rel="noreferrer">Updated Google Business Account Notification</a> with the topic created in step one with all kind of notification type.</li>
  </ol>
  
  <p><strong>Problem:</strong>
  <br/> </p>
  
  <ol>
  <li>After successfully completing the 3 steps above, Google is still not pushing the reviews data to my server when I go to My Business API and edit the review.</li>
  <li>Can I create a single topic for all users and use a single subscription of application, so when users authorize their My Business API with our platform we just have to link those businesses with that single topic to get their notification? </li>
  </ol>
  
  <p>This is what i get from google's documentation.  <br/>
  Any respond is highly appreciated.</p>
  
  <p>Thank you :)</p>