Delete row 477614 from events

seq 477614
id evt_ce15bd6b202a
kind signal_ingest
ts 2026-04-22T01:02:31.333571+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-22T01:02:27.833 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_snapshot:2c0826c19bd79376
episode_id NULL
created_at 2026-04-22T01:02:31.335067+00:00
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