Delete row sig_37777348529c from signals

id sig_37777348529c
event_id evt_dac27148ad6f
watcher_id NULL
signal_type opportunity_research_snapshot
value {"as_of":"2026-04-09T19:12:59.438804+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {}
dedupe_key opportunity_research_snapshot:b7e855885cf88889
throttle_s 0
created_at 2026-04-09T19:12:59.438804+00:00
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