Delete row 52668 from events

seq 52668
id evt_6336bd865955
kind signal_ingest
ts 2026-04-16T00:19:39.667008+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-15T14:34:45.557 ...
source_ref candidate:sc_70512be4391f2e36
confidence 0.42
dedupe_key signal_enriched:discovery_ipo_delta:17513e0f355d18 ...
episode_id NULL
created_at 2026-04-16T00:19:39.667059+00:00
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