title: Firebase realtime database. Is there way to set timestamp of record creation?
body: <p>I am trying to set timestamp of record creation in database</p>
  
  <p>For example: I POST (via Firebase Realtime Database REST API) object</p>
  
  <pre><code>{"name": "Name", "last_name": "LastName" }
  </code></pre>
  
  <p>And then I can see in console:</p>
  
  <pre><code>{"name": "Name", "last_name": "LastName", "time_stamp": 1563371542446 }
  </code></pre>