{
    "delegates": [],
    "service_account_impersonation_url": "https://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/example-01-iam@example-01.iam.gserviceaccount.com:generateAccessToken",
    "source_credentials": {
        "client_id": "placeholder_client_id",
        "client_secret": "placeholder_client_secret",
        "refresh_token": "placeholder_refresh_token",
        "type": "authorized_user"
    },
    "type": "impersonated_service_account"
}