Delete row sig_e9d80b4a0c59 from signals

id sig_e9d80b4a0c59
event_id evt_073f0c469fd5
watcher_id NULL
signal_type market_headlines_snapshot
value {"as_of":"2026-04-21T06:10:15.269824+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {}
dedupe_key market_headlines_snapshot:73469c9384c0280a
throttle_s 0
created_at 2026-04-21T06:10:15.269824+00:00
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