fm-eb

{
  "iss": "<email of service-account-user>",
  "aud": "google",
  "typ": "savetowallet",
  "iat": 1656319498,
  "origins": [],
  "payload": {
	"genericObjects": [
	  {
		"id": "<issuerId>.<randomUUID>",

fm-eb

private FirebaseDatabase firebaseDatabase;

private DatabaseReference connectedRef;
private ValueEventListener connectionStateListener;

public FirebaseHeartbeatConnector(FirebaseApp firebaseApp) {
    L.i("FirebaseHeartbeatConnector() called with: firebaseApp = [" + firebaseApp + "]");
    firebaseDatabase = FirebaseDatabase.getInstance(firebaseApp);
    firebaseDatabase.setLogLevel(Logger.Level.DEBUG);
}