Delete row sig_8bed2d2a2022 from signals

id sig_8bed2d2a2022
event_id evt_f09f4bba0a33
watcher_id NULL
signal_type news_headline_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source news_rss
reason_trace {"_evidence_event_ids":["evt_17355bd33 ...
dedupe_key signal_enriched:news_delta:8ca6f9ee36f4ed8f
throttle_s 0
created_at 2026-04-18T18:03:45.196698+00:00
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