Delete row sig_bf408794949b from signals

id sig_bf408794949b
event_id evt_ff070cc607ee
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-19T07:16:40.634248+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:c8ed0832c5623fce
throttle_s 0
created_at 2026-04-19T07:16:40.634248+00:00
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