Delete row sig_6e7951d378be from signals

id sig_6e7951d378be
event_id evt_e2760b07f026
watcher_id NULL
signal_type discovery_sec_filing_delta
value {"aggregator_url":"https://www.sec.gov ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_sec_filings
reason_trace {"_evidence_event_ids":["evt_03e128c5d ...
dedupe_key signal_enriched:discovery_sec_filing_delta:09f5abf ...
throttle_s 0
created_at 2026-04-14T02:04:49.876253+00:00
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