Delete row sig_e0a777c294f9 from signals

id sig_e0a777c294f9
event_id evt_5e92445bfa55
watcher_id NULL
signal_type discovery_crypto_extremes_delta
value {"aggregator_url":"https://news.bitcoi ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_e30c34ac0 ...
dedupe_key signal_enriched:discovery_crypto_extremes_delta:e5 ...
throttle_s 0
created_at 2026-04-10T06:07:12.383671+00:00
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