Delete row 481863 from events

seq 481863
id evt_ef294742a5de
kind signal_ingest
ts 2026-04-22T13:33:52.715390+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-22T13:33:25.606 ...
source_ref candidate:sc_c11cbfd13bc3da02
confidence 0.42
dedupe_key signal_enriched:news_delta:5a15d055683055ed
episode_id NULL
created_at 2026-04-22T13:33:52.715444+00:00
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