Delete row sig_61653bcb5544 from signals

id sig_61653bcb5544
event_id evt_de9290569482
watcher_id NULL
signal_type discovery_new_listings_delta
value {"aggregator_url":"https://www.nasdaq. ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_5960e3f51 ...
dedupe_key signal_enriched:discovery_new_listings_delta:6f10d ...
throttle_s 0
created_at 2026-04-21T19:57:20.275338+00:00
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