1. Get Firebase Database URL, Project ID, and Service Account Details
You can get your connection details from whoever set up your Firebase account. You can find your Project ID in the Settings page of your Firebase account. Your Firebase Database URL will usually be https://<firebase-project-id>.firebaseio.com.
You can find your Firebase Service Account Details under the “Service accounts” section of your Firebase Settings page. Click the “Generate new private key” button to download a file containing your Service Account details.
Click the ”+” button in the workflow canvas and choose the PostgreSQL from the sidebar. Under Connect to a Firebase account, choose “Add new account for Firebase” and enter your Firebase Database URL and Project ID. Open the Service Account file you downloaded in the previous step and copy the entire JSON object under Add your Service Account with Firebase privileges.