Delete row 31321 from events

seq 31321
id evt_6b6b75b8ca77
kind signal_candidate_ingest
ts 2026-04-12T22:56:21.120567+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-12T22:56:21.120 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:d1ffa9add0c4344c
episode_id NULL
created_at 2026-04-12T22:56:29.263052+00:00
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