Delete row sc_52e7d73837b0e5c3 from signal_candidates

id sc_52e7d73837b0e5c3
status failed
signal_type discovery_unusual_volume_delta
source discovery_ingestor
url https://www.nasdaq.com/articles/2-under-radar-biot ...
headline 2 Under-the-Radar Biotech Stocks Worth Buying for ...
source_event_id evt_5cf158311021
dedupe_key discovery_unusual_volume_delta:642e5d5d5b23b06f
claim_id NULL
claimed_by NULL
claimed_at NULL
lease_expires_at NULL
attempt_count 3
failed_at 2026-04-19T17:13:32.820401+00:00
last_error extraction_failed: Unterminated string starting at ...
output_event_id NULL
created_at 2026-04-19T15:45:47.773233+00:00
updated_at 2026-04-19T17:13:32.820401+00:00
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