Delete row 471272 from events

seq 471272
id evt_42740e01788d
kind signal_ingest
ts 2026-04-21T13:49:59.367482+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T13:49:56.264 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_snapshot:e39e50cbafb559fd
episode_id NULL
created_at 2026-04-21T13:49:59.370054+00:00
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