Terraform Eventarc Audit Log Trigger

Question

I am trying to trigger a Cloud Run service by uploading a file to a Google Cloud Storage bucket. To do so, an Eventarc trigger was created via Terraform, which filters for storage.objects.create event from the Audit Logs. Google has documentation on this exact topic: here

Even though the audit log is correctly recorded, the event is not getting fired (no activity from Eventarc, Pub/Sub, and Cloud Run). I am not sure where else to look.

My question is: Can I still achieve this using Audit Log triggers without relying on direct triggers (e.g., google.cloud.storage.object.v1.finalized)?

Truncated output of gcloud eventarc triggers describe:

destination:
  cloudRun:
    region: us-east4
    service: <SERVICE_NAME>
eventFilters:
- attribute: serviceName
  value: storage.googleapis.com
- attribute: type
  value: google.cloud.audit.log.v1.written
- attribute: methodName
  value: storage.objects.create
name: projects/<PROJECT>/locations/us-east4/triggers/<TRIGGER_NAME>
serviceAccount: <COMPUTE_ENGINE_DEFAULT_SERVICE_ACCOUNT>
transport:
  pubsub:
    subscription: projects/<PROJECT>/subscriptions/eventarc-us-east4-<TRIGGER_NAME>-sub-279
    topic: projects/<PROJECT>/topics/eventarc-us-east4-<TRIGGER_NAME>-401

Truncated output of gcloud logging read "protoPayload.methodName=storage.objects.create" --format=json:

{
  "logName": "projects/<PROJECT>/logs/cloudaudit.googleapis.com%2Fdata_access",
  "protoPayload": {
    "@type": "type.googleapis.com/google.cloud.audit.AuditLog",
    "methodName": "storage.objects.create",
    "resourceName": "projects/_/buckets/<BUCKET>/objects/<BLOB>",
    "serviceData": {
      "@type": "type.googleapis.com/google.iam.v1.logging.AuditData",
      "policyDelta": {}
    },
    "serviceName": "storage.googleapis.com",
    "status": {}
  },
  "resource": {
    "labels": {
      "bucket_name": "<BUCKET>",
      "project_id": "<PROJECT>"
    },
    "type": "gcs_bucket"
  },
  "severity": "INFO",
}

From GCP Console:

Finally, how I'm creating the Eventarc Trigger with Terraform:

resource "google_eventarc_trigger" "cloud_run_trigger" {
    name = "<TRIGGER_NAME>"
    matching_criteria {
        attribute = "type"
        value = "google.cloud.audit.log.v1.written"
    }
    matching_criteria {
        attribute = "serviceName"
        value = "storage.googleapis.com"
    }
    matching_criteria {
        attribute = "methodName"
        value = "storage.objects.create"
    }
    destination {
        cloud_run_service {
            service = google_cloud_run_service.default.name
        }
    }
}

I've done everything I can to follow Google's documentation & filter for correct Audit Log based on serviceName and methodName. The entire project is silent when the event is logged, which seems like the event is not firing for some reason. I do not observe any activity in Cloud Run, Eventarc, and Pub/Sub.