Delete row 53800 from events

seq 53800
id evt_ec1c9ea59faf
kind signal_candidate_ingest
ts 2026-04-16T02:08:52.472606+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-16T02:08:52.472 ...
source_ref sec:edgar
confidence 1.0
dedupe_key discovery_sec_filing_delta:ccb5b654bab24181
episode_id NULL
created_at 2026-04-16T02:09:06.154764+00:00
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