Delete row sig_89746afa4a52 from signals

id sig_89746afa4a52
event_id evt_2b9171542377
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_e806c5b88 ...
dedupe_key signal_enriched:discovery_unusual_volume_delta:bec ...
throttle_s 0
created_at 2026-04-12T01:38:58.509416+00:00
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