Delete row 463116 from events

seq 463116
id evt_5374e3ade1cb
kind signal_candidate_ingest
ts 2026-04-20T18:44:57.233742+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-20T18:44:57.233 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:db325801d5b6870c
episode_id NULL
created_at 2026-04-20T18:45:02.863057+00:00
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