Delete row sig_fc74cd0a4a40 from signals

id sig_fc74cd0a4a40
event_id evt_11abbbb1a1f1
watcher_id NULL
signal_type opportunity_research_snapshot
value {"as_of":"2026-04-21T13:28:17.709026+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {}
dedupe_key opportunity_research_snapshot:b1cf35df3f214793
throttle_s 0
created_at 2026-04-21T13:28:17.709026+00:00
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