title: How to send fcm notification using flutter and firebase realtime database
body: <p>i am trying to do firebase realtime messaging code in node.js,but i am confuce about how to do that?
   const doc = snap.data()
      console.log(doc)</p>
  
  <pre><code>const idFrom = doc.idFrom
  const idTo = doc.idTo
  const messageId =context.params.messageId
  // Get push token user to (receive)
  </code></pre>