Delete row sig_14755eb2ecaf from signals

id sig_14755eb2ecaf
event_id evt_6df13a68fe2e
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_989af09a4 ...
dedupe_key signal_enriched:discovery_unusual_volume_delta:280 ...
throttle_s 0
created_at 2026-04-20T01:00:47.909969+00:00
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