Delete row 28271 from events

seq 28271
id evt_fa51ac86ec6e
kind signal_ingest
ts 2026-04-12T08:26:21.270634+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-12T08:26:21.270 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:751bedce33e299ef
episode_id NULL
created_at 2026-04-12T08:26:23.127737+00:00
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