Generating your own Push Notification Key
STEP 1: Go to Firebase Console - https://console.firebase.google.com
STEP 2: Generate push notification keys
2.1 At the bottom of the page, in the Web Configuration section, select "Generate key pair".
STEP 3: Save Push Notification Keys
3.1 Copy the received key and send it to the Support specialist marked as Public Key
3.4 Copy the key you received and give it to Support specialist marked Private Key
Example: Private Key - O678UMYlpVhoaJcFLerHYc5N1g1fzffRU5poA4mhfC4I
As a result, it is necessary to pass the Public and Private Key to the Support specialist.
Public Key - BP7E0SP1S90AgpyBX-dTvEOfeXSSqnqLAKmHalqOrTYfIA_vK5EkEjGF0NyYUQG4Kpzs4-BVUCWXlYvEsCKyYBM
Private Key - O678UMYlpVhoaJcFLerHYc5N1g1fzfRU5poA4mhfC4I