Delete row sig_3cccba538ae7 from signals

id sig_3cccba538ae7
event_id evt_28c238ab6844
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-21T09:46:27.277477+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:acd5a6ae8dbe67cc
throttle_s 0
created_at 2026-04-21T09:46:27.277477+00:00
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