Delete row sig_b42e1ff69c0c from signals

id sig_b42e1ff69c0c
event_id evt_bbce8afe86f8
watcher_id NULL
signal_type discovery_ipo_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_447a09fad ...
dedupe_key signal_enriched:discovery_ipo_delta:52ddb67763c116 ...
throttle_s 0
created_at 2026-04-21T09:16:05.409385+00:00
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