Delete row sig_e66e6c6df155 from signals

id sig_e66e6c6df155
event_id evt_8a19e0691230
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-19T23:25:56.430616+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:178a8655d027c01a
throttle_s 0
created_at 2026-04-19T23:25:56.430616+00:00
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