I'm trying to send a push notification via REST API Firebase by Postman for specific user I followed below request pattern:
POST request with below URL :
https://fcm.googleapis.com/fcm/send?key=**my Web API key**
and the Body is
{ "data": { "title": "Firebase notification", "detail": "I am firebase notification. you can customise me. enjoy" }, "to" : "USER UID" }
but the problem is it returns The request was missing an Authentication Key.