Delete row sig_a5b4c344556a from signals

id sig_a5b4c344556a
event_id evt_fcce44dc13bc
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-18T05:39:27.279662+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:2b9f12d8443769b0
throttle_s 0
created_at 2026-04-18T05:39:27.279662+00:00
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