Delete row sig_97c397c659ae from signals

id sig_97c397c659ae
event_id evt_176165867f8c
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-18T16:58:03.657787+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:c9ee095fe9178608
throttle_s 0
created_at 2026-04-18T16:58:03.657787+00:00
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