I am trying to send a test notification using Firebase Cloud Messaging via Postman. I\'m doing a POST to this url
https://fcm.googleapis.com/v1/projects/[my
To generate an for testing push notification, you can use Google Developers OAuth 2.0 Playground
You can even send a test Push Notification using Google Developers OAuth 2.0 Playground itself. Or if you want can use Postman / Terminal (curl command) as well.
Please find the detailed steps here, which I wrote.
Note : Instead of "Project name" in the Endpoint, you have to use "Project ID". Steps for getting the Project ID is also mentioned in the above link.