Delete row sig_8577a5e7d7c9 from signals

id sig_8577a5e7d7c9
event_id evt_e42eafde8afe
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-13T13:55:49.401845+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:7162c9438b874fd9
throttle_s 0
created_at 2026-04-13T13:55:49.401845+00:00
Cancel