Delete row sigfp:signal_enriched:discovery_sec_filing_delta:45301c53f034bb9d from signal_fps

fp sigfp:signal_enriched:discovery_sec_filing_delta:4 ...
status open
signal_type discovery_sec_filing_delta
signal_id sig_3b90e41686ab
watcher_id NULL
created_at 2026-04-07T08:18:39.417658+00:00
updated_at 2026-04-07T08:18:39.417658+00:00
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