The Domain of the Malware Bytes.
Client ID and Client Secret
For API communications you need to use client ID and secret. To obtain a client ID/client secret pair, open the Nebula console, go to Settings -> APIs & Integrations. On that page, click the "Add" button and submit the form.
Your Nebula account id (Ex. "9256034b-7967-4253-a5d9-260663e4fa4f")