Delete row 63403 from events

seq 63403
id evt_30adebcd01a9
kind signal_candidate_ingest
ts 2026-04-17T09:44:53.486531+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-17T09:44:53.486 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:7ec9cdf285e615e2
episode_id NULL
created_at 2026-04-17T09:44:58.196377+00:00
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