Delete row 473742 from events

seq 473742
id evt_38e30a9e980a
kind signal_ingest
ts 2026-04-21T22:08:21.667399+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T10:00:50.487 ...
source_ref candidate:sc_4ad53bf81808d8b9
confidence 0.42
dedupe_key signal_enriched:news_delta:97fc20bfddca5118
episode_id NULL
created_at 2026-04-21T22:08:21.667475+00:00
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