title: Tracking changes in JSON files
body: <p>One of the resources my app uses is data in two JSON files that are pulled from a third party and that are constantly updated with fresh content.
  Each of these files have a specific structure that doesn't change.
  However, sometimes the third party creates structural changes that may mess with my app.</p>
  
  <p>My question is: how can I monitor their structure so I can detect changes as they occur?</p>
  
  <p>Thanks!</p>