Delete row 50739 from events

seq 50739
id evt_498432145821
kind signal_candidate_ingest
ts 2026-04-15T22:02:57.328966+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-15T22:02:57.328 ...
source_ref rss
confidence 1.0
dedupe_key discovery_new_listings_delta:642fa08933cfdfb7
episode_id NULL
created_at 2026-04-15T22:03:00.571387+00:00
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