add a sample of audit log
add a sample of audit log

PiperOrigin-RevId: 296332186
Change-Id: Ib45a475c8ff1cc37dec556e2eea304ecbb571d83

GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services