Delete row 50700 from events

seq 50700
id evt_565abec25494
kind signal_ingest
ts 2026-04-15T22:01:24.047737+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-15T02:18:53.247 ...
source_ref candidate:sc_dd44d5a9b5c64be2
confidence 0.74
dedupe_key signal_enriched:discovery_crypto_extremes_delta:15 ...
episode_id NULL
created_at 2026-04-15T22:01:24.047785+00:00
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