Delete row sig_5370250e1ccf from signals

id sig_5370250e1ccf
event_id evt_ef4d1df33bb5
watcher_id NULL
signal_type opportunity_research_snapshot
value {"as_of":"2026-04-11T04:18:36.921795+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {}
dedupe_key opportunity_research_snapshot:91869ed7c95348bc
throttle_s 0
created_at 2026-04-11T04:18:36.921795+00:00
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