Delete row sig_1e37d87c3805 from signals

id sig_1e37d87c3805
event_id evt_5a5d3fa37a87
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-20T03:21:05.276893+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:5a64f159502eca32
throttle_s 0
created_at 2026-04-20T03:21:05.276893+00:00
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