Delete row 21684 from events

seq 21684
id evt_a1b5180f4764
kind signal_ingest
ts 2026-04-11T05:48:24.696014+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-11T05:48:24.696 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:c195c60ab896fcba
episode_id NULL
created_at 2026-04-11T05:48:26.233415+00:00
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