Delete row sig_3ff1c48e061f from signals

id sig_3ff1c48e061f
event_id evt_45e4a3752094
watcher_id NULL
signal_type opportunity_case_memory
value {"case_id":"case_73fc7b9f6582aba1" ...
threshold NULL
direction NULL
severity low
window NULL
source opportunity_finder
reason_trace {"_evidence_event_ids":["evt_5fa51bed2 ...
dedupe_key opportunity_case_memory:case_73fc7b9f6582aba1:moni ...
throttle_s 3600
created_at 2026-04-03T13:19:02.152795+00:00
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