Delete row sig_4633ff2f33cd from signals

id sig_4633ff2f33cd
event_id evt_1d5f15bc404e
watcher_id NULL
signal_type macro_prices_snapshot
value {"as_of":"2026-04-08T07:21:41.310726+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source macro_ingestor
reason_trace {}
dedupe_key macro_prices_snapshot:77a430486f890501
throttle_s 0
created_at 2026-04-08T07:21:41.297504+00:00
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