Delete row sig_0f13fa39e3a8 from signals

id sig_0f13fa39e3a8
event_id evt_45c70cdcf189
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_c306adbc4 ...
dedupe_key signal_enriched:discovery_sec_filing_delta:2c923bb ...
throttle_s 0
created_at 2026-04-07T03:18:43.308311+00:00
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