Delete row 471619 from events

seq 471619
id evt_7524ab2299f5
kind signal_candidate_ingest
ts 2026-04-21T15:19:25.858681+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T15:19:25.858 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_delta:92a4dcb36b846212
episode_id NULL
created_at 2026-04-21T15:19:28.582154+00:00
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