Delete row sig_e89e42f9a9d8 from signals

id sig_e89e42f9a9d8
event_id evt_31ffe3f64a90
watcher_id NULL
signal_type market_prices_snapshot
value {"as_of":"2026-04-18T01:27:09.392385+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_prices_snapshot:47348918649873e0
throttle_s 0
created_at 2026-04-18T01:27:09.392385+00:00
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