Delete row sig_994c80ea2849 from signals

id sig_994c80ea2849
event_id evt_dd13028dcd31
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-21T22:00:01.311456+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:8012b1072f0d442d
throttle_s 0
created_at 2026-04-21T22:00:01.311456+00:00
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