Delete row 479016 from events

seq 479016
id evt_b4b5b493b4d7
kind signal_ingest
ts 2026-04-22T04:14:46.624600+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-22T04:14:46.624 ...
source_ref targeted_research:case_b05322590bf5684b
confidence 0.6
dedupe_key opportunity_research_snapshot:bb6d6355c0e0f1e7
episode_id NULL
created_at 2026-04-22T04:14:47.687635+00:00
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