Delete row sig_334a1369141e from signals

id sig_334a1369141e
event_id evt_bf5583b2a55e
watcher_id NULL
signal_type discovery_ipo_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_94899fea1 ...
dedupe_key signal_enriched:discovery_ipo_delta:c131a75d199b9f ...
throttle_s 0
created_at 2026-04-08T02:28:02.401723+00:00
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