{"database": "audit", "table": "detection_signals", "rows": [[49, "2026-05-21T06:59:36.739985Z", "anom_stat_new_actor", "warning", "klaviyo", "New actor seen: '01KDR7DD2JKDA2RHQCE5GN5M03' on source 'klaviyo:events:backfill' (store: klaviyo)", "{\"event_id\":9806055,\"actor\":\"01KDR7DD2JKDA2RHQCE5GN5M03\",\"source\":\"klaviyo:events:backfill\",\"store\":\"klaviyo\",\"first_seen\":\"2026-01-04T19:02:17+00:00\"}", "[9806055]", "new_actor:klaviyo:events:backfill:klaviyo:01KDR7DD2JKDA2RHQCE5GN5M03", "2026-05-26T22:50:43.845Z", null]], "columns": ["id", "fired_at", "rule_name", "severity", "store", "summary", "payload_json", "related_event_ids", "dedupe_key", "acknowledged_at", "acknowledged_by"], "primary_keys": ["id"], "primary_key_values": ["49"], "units": {}, "query_ms": 3.8676601834595203}