title: How te send push notifications from FCM using Postman
body: <p>I'm using the documentation from firebase to try send a message to an device using the Post method. <a href="https://firebase.google.com/docs/cloud-messaging/send-message" rel="nofollow noreferrer">firebase documentation</a> and 
  here is my example:<a href="https://i.stack.imgur.com/mDapq.png" rel="nofollow noreferrer">authentication</a> where has the My_key i put the server key from firebase cloud and here is the body <a href="https://i.stack.imgur.com/wdurA.png" rel="nofollow noreferrer">body</a> And I'm reciving an 401 status error</p>