Delete row 477889 from events

seq 477889
id evt_2f4806b614ef
kind signal_ingest
ts 2026-04-22T02:11:45.705833+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-22T02:11:45.705 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:dc657ae058a7a2b8
episode_id NULL
created_at 2026-04-22T02:11:47.149146+00:00
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