title: How to send push notification to Firebase with localized content?
body: <p>I migrate application from <code>OneSignal</code> to <code>FCM</code>. In <code>One signal</code> there was a feature that automatically detect the language set on the device. So, when I've sent to oneSignal
  <code>{&quot;contents&quot;: {&quot;el&quot;: &quot;Ο χρήστης User ζητά πρόσβαση στο κοινόχρηστα αρχεία&quot;, &quot;en&quot;: &quot;User wants access to shared files}}</code> it detects device language and chooses proper content from the request. Is there something like that in <strong>Firebase</strong>?</p>