Delete row sig_eb7054f6243e from signals

id sig_eb7054f6243e
event_id evt_9b5fda69bd81
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_bfafb840d ...
dedupe_key signal_enriched:discovery_sec_filing_delta:830d197 ...
throttle_s 0
created_at 2026-04-18T03:05:05.644967+00:00
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