Delete row 4772 from events

seq 4772
id evt_5e528e55e33b
kind signal_ingest
ts 2026-04-08T05:31:21.394239+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-08T05:30:32.359 ...
source_ref candidate:sc_fad5a87bf4ad4c27
confidence 0.72
dedupe_key signal_enriched:discovery_unusual_volume_delta:574 ...
episode_id NULL
created_at 2026-04-08T05:31:21.394336+00:00
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