Delete row 450713 from events

seq 450713
id evt_d1a61a8be64d
kind signal_candidate_ingest
ts 2026-04-20T15:42:12.815098+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-20T15:42:12.815 ...
source_ref crypto_mixed
confidence 1.0
dedupe_key discovery_crypto_extremes_delta:58ef0d39c2c7fcab
episode_id NULL
created_at 2026-04-20T15:42:22.687213+00:00
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