Delete row sig_9b69556b4dff from signals

id sig_9b69556b4dff
event_id evt_e09c1b2c7862
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-12T09:50:28.581403+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:d983b4acdea1c10d
throttle_s 0
created_at 2026-04-12T09:50:28.581403+00:00
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