Delete row sig_eebfd257f7a0 from signals

id sig_eebfd257f7a0
event_id evt_73ccc313813c
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-13T06:25:51.446327+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:b83a06cc235a6328
throttle_s 0
created_at 2026-04-13T06:25:51.446327+00:00
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