Delete row 19622 from events

seq 19622
id evt_ffe1c5dcb110
kind signal_ingest
ts 2026-04-05T07:06:42.455660+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-05T06:37:06.964 ...
source_ref candidate:sc_2a774653c086985b
confidence 0.9
dedupe_key signal_enriched:discovery_ipo_delta:63afab99e08306 ...
episode_id NULL
created_at 2026-04-05T07:06:42.456214+00:00
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