Delete row sigfp:signal_enriched:discovery_sec_filing_delta:445d36bcbe67df7d from signal_fps

fp sigfp:signal_enriched:discovery_sec_filing_delta:4 ...
status open
signal_type discovery_sec_filing_delta
signal_id sig_63db6121316f
watcher_id NULL
created_at 2026-04-08T03:30:11.434990+00:00
updated_at 2026-04-08T03:30:11.434990+00:00
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