Delete row 471667 from events

seq 471667
id evt_28559d1ce7ce
kind signal_candidate_ingest
ts 2026-04-21T15:19:25.858681+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T15:19:25.858 ...
source_ref crypto_mixed
confidence 1.0
dedupe_key discovery_crypto_extremes_delta:ec65f26a34eccf59
episode_id NULL
created_at 2026-04-21T15:19:34.272387+00:00
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