Delete row 473168 from events

seq 473168
id evt_c37e33d99f53
kind signal_ingest
ts 2026-04-21T21:14:37.138904+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-21T21:14:37.138 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:f4268711ba976194
episode_id NULL
created_at 2026-04-21T21:14:38.941399+00:00
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