Delete row 471247 from events

seq 471247
id evt_593cfa220e75
kind signal_ingest
ts 2026-04-21T13:49:16.546253+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T00:52:49.697 ...
source_ref candidate:sc_a712ebcaf383184e
confidence 0.42
dedupe_key signal_enriched:news_delta:494a2e2912afa297
episode_id NULL
created_at 2026-04-21T13:49:16.546311+00:00
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