Delete row sig_2510723e2ed5 from signals

id sig_2510723e2ed5
event_id evt_dc2df643dabe
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-07T17:02:32.711651+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:bc9c7c6418388e5e
throttle_s 0
created_at 2026-04-07T17:02:32.711651+00:00
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