Delete row sig_38f6a8d1b150 from signals

id sig_38f6a8d1b150
event_id evt_693a2c2e7055
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-20T10:21:23.608796+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:778d9719b6167504
throttle_s 0
created_at 2026-04-20T10:21:23.608796+00:00
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