Delete row sig_272702602bde from signals

id sig_272702602bde
event_id evt_e7f10fddd38b
watcher_id NULL
signal_type opportunity_research_delta
value {"aggregator_url":"https://alhurra.com ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {"_evidence_event_ids":["evt_e115fd5b0 ...
dedupe_key signal_enriched:opportunity_research_delta:feb412e ...
throttle_s 0
created_at 2026-04-05T19:19:05.730622+00:00
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