Delete row sig_90f4086f18ad from signals

id sig_90f4086f18ad
event_id evt_3a6c10451a88
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_272849092 ...
dedupe_key signal_enriched:discovery_unusual_volume_delta:20b ...
throttle_s 0
created_at 2026-04-10T08:08:24.084182+00:00
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