Admin -> BackOffice: Create Machine
BackOffice -> Backend: Call API Create Machine
Backend -> BackOffice: Response API Create Machine
Admin -> Machine: Setup machine's name, password
Machine -> Machine: Run
Machine -> Machine: Check if have private key
Machine -> Backend: Call API get machine's private RS256 key if not have private key
Backend -> Machine: Response machine's private RS256 key
Machine -> Machine: Save machine's private RS256 key
Machine -> GCP Iot Core: Connect