Delete row 464832 from events

seq 464832
id evt_6470be02f0cf
kind signal_ingest
ts 2026-04-20T19:11:43.712616+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-20T18:43:38.141 ...
source_ref candidate:sc_b53ef503d7acb9b0
confidence 0.42
dedupe_key signal_enriched:news_delta:2b45b8d791856588
episode_id NULL
created_at 2026-04-20T19:11:43.712669+00:00
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