Delete row sig_1ea44ba1889a from signals

id sig_1ea44ba1889a
event_id evt_604ebf8cbd84
watcher_id NULL
signal_type discovery_sec_filings_snapshot
value {"as_of":"2026-04-10T20:20:53.145415+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_sec_filings
reason_trace {}
dedupe_key discovery_sec_filings_snapshot:5c201102ec7fe17d
throttle_s 0
created_at 2026-04-10T20:20:53.145415+00:00
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