Delete row sig_a11ac3ead2f3 from signals

id sig_a11ac3ead2f3
event_id evt_e49d754642ef
watcher_id NULL
signal_type discovery_sector_rotation_delta
value {"aggregator_url":"https://www.nasdaq. ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_9d8e0866a ...
dedupe_key signal_enriched:discovery_sector_rotation_delta:fe ...
throttle_s 0
created_at 2026-04-09T15:06:58.940339+00:00
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