GCP Audit Logs - DNSSEC Disabled on Managed DNS Zone

Original query, unchanged.

GCPAuditLogs
| where ServiceName == "dns.googleapis.com"
| where MethodName in ("dns.managedZones.update", "dns.managedZones.patch")
| where GCPResourceType == "dns_managed_zone" and Severity == "NOTICE"
| extend 
    ResponseJson = parse_json(Response),
    RequestMetadataJson = parse_json(RequestMetadata),
    AuthInfoJson = parse_json(AuthenticationInfo)
| extend ZoneContext = ResponseJson.operation.zoneContext
| where isnotempty(ZoneContext)
| extend 
    OldDnsSecState = tostring(ZoneContext.oldValue.dnssecConfig.state),
    NewDnsSecState = tostring(ZoneContext.newValue.dnssecConfig.state)
| where OldDnsSecState == "ON" and NewDnsSecState == "OFF"
| extend 
    ManagedZoneName = extract(@"managedZones/([^/]+)", 1, GCPResourceName),
    DnsName = tostring(ResponseJson.managedZone.dnsName),
    ZoneId = tostring(ResponseJson.managedZone.id),
    ZoneDescription = tostring(ResponseJson.managedZone.description),
    Visibility = tostring(ResponseJson.managedZone.visibility),
    OperationId = tostring(ResponseJson.operation.id),
    CallerIpAddress = tostring(RequestMetadataJson.callerIp),
    AuthEmail = tostring(AuthInfoJson.principalEmail)
| extend 
    AccountName = tostring(split(PrincipalEmail, "@")[0]), 
    AccountUPNSuffix = tostring(split(PrincipalEmail, "@")[1])
| project TimeGenerated,
          PrincipalEmail,
          AuthEmail,
          ProjectId,
          ManagedZoneName,
          DnsName,
          ResourceName = GCPResourceName,
          Visibility,
          ZoneId,
          ZoneDescription,
          OperationId,
          CallerIpAddress,
          MethodName,
          ServiceName,
          Severity,
          LogName,
          InsertId,
          AccountName,
          AccountUPNSuffix