Delete row sig_c820c4daf2cc from signals

id sig_c820c4daf2cc
event_id evt_4b0bd8a78b1e
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-22T09:11:49.502029+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:ad07541910740c57
throttle_s 0
created_at 2026-04-22T09:11:49.502029+00:00
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