Delete row 477629 from events

seq 477629
id evt_c705e466ba19
kind signal_ingest
ts 2026-04-22T01:02:38.327423+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-22T01:02:27.833 ...
source_ref sec:edgar
confidence 1.0
dedupe_key discovery_sec_filings_snapshot:b70f97f2aa555ce1
episode_id NULL
created_at 2026-04-22T01:02:38.328139+00:00
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