Delete row 56220 from events

seq 56220
id evt_908d730de6ef
kind signal_ingest
ts 2026-04-16T10:10:51.261666+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-16T10:10:34.745 ...
source_ref candidate:sc_6bc23221d9a58bbe
confidence 0.42
dedupe_key signal_enriched:news_delta:f47c5259c56f2083
episode_id NULL
created_at 2026-04-16T10:10:51.261739+00:00
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