Delete row sig_9c5012258c30 from signals

id sig_9c5012258c30
event_id evt_e973354c674f
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:2f1433ed5cb76b1f
throttle_s 0
created_at 2026-04-11T04:18:36.921795+00:00
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