Delete row sig_e99f8a089dce from signals

id sig_e99f8a089dce
event_id evt_6e4e4bcdd0bf
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_a8d51a04e ...
dedupe_key signal_enriched:discovery_unusual_volume_delta:5a3 ...
throttle_s 0
created_at 2026-04-06T22:34:24.548125+00:00
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