Delete row 139900 from events

seq 139900
id evt_bb9d8a7988ec
kind signal_ingest
ts 2026-04-18T05:06:13.425440+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-18T05:06:11.297 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_snapshot:0668314de2046547
episode_id NULL
created_at 2026-04-18T05:06:13.427557+00:00
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