Delete row sig_53f9a8827ca9 from signals

id sig_53f9a8827ca9
event_id evt_143fa2743297
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-18T13:56:00.490708+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:0c4a3eaf45ddf537
throttle_s 0
created_at 2026-04-18T13:56:00.490708+00:00
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