Delete row sig_b4a8213ffc4d from signals

id sig_b4a8213ffc4d
event_id evt_1d2a2bd161e3
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-12T05:15:52.710826+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:a58f65a21200f69d
throttle_s 0
created_at 2026-04-12T05:15:52.710826+00:00
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