Delete row 470575 from events

seq 470575
id evt_3e76a8eebb0b
kind signal_candidate_ingest
ts 2026-04-21T10:45:03.231354+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T10:45:03.231 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_delta:e69fbdde57dac283
episode_id NULL
created_at 2026-04-21T10:45:06.150446+00:00
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