Delete row sig_8ad83e2d401e from signals

id sig_8ad83e2d401e
event_id evt_dbe912c51044
watcher_id NULL
signal_type discovery_unusual_volume_delta
value {"aggregator_url":"https://www.nasdaq. ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_bda3ac26c ...
dedupe_key signal_enriched:discovery_unusual_volume_delta:11a ...
throttle_s 0
created_at 2026-04-16T23:13:51.792363+00:00
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