Delete row 470121 from events

seq 470121
id evt_1e078934bfe5
kind signal_ingest
ts 2026-04-21T08:53:56.520598+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-21T08:53:56.520 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:d478314e0dbcc9cb
episode_id NULL
created_at 2026-04-21T08:53:58.009554+00:00
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