Delete row 471260 from events

seq 471260
id evt_674a33c49105
kind signal_candidate_ingest
ts 2026-04-21T13:49:56.265209+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T13:49:56.265 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_delta:78e7784e5c3c8adc
episode_id NULL
created_at 2026-04-21T13:49:58.884867+00:00
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