Who is [email protected] that is calling the cloud functions? '^_^

Hello. Was looking at the cloud function logs and they are odd:

Cloud FunctionsSetIamPolicyus-central1... [email protected] {@type: type.googleapis.com/google.cloud.audit.AuditLog, authenticationInfo: {…}, authorizationInfo: […], methodName: google.cloud.functions.v1.CloudFunctionsService.SetIamPolicy, request: {…}, requestMetadata: {…}, resourceLocation: {…}, resourceName: projects....