{"database": "audit", "table": "poll_heartbeats", "rows": [[4, "2026-05-07T13:10:51.659635Z", "app:detector", "ok", "7 signals", 7]], "columns": ["id", "heartbeat_at", "source", "status", "detail", "events_emitted"], "primary_keys": ["id"], "primary_key_values": ["4"], "units": {}, "query_ms": 1.4679350424557924}