Delete row 19838 from events

seq 19838
id evt_a246b8714541
kind signal_emitted
ts 2026-04-10T21:15:12.276797+00:00
actor technical_analyzer
subject_entity_ids []
payload {"created_at":"2026-04-10T21:15:12.276 ...
source_ref NULL
confidence 0.570501489849636
dedupe_key ta:technical_indicator_signal:priceBelowEma12:ema_ ...
episode_id NULL
created_at 2026-04-10T21:15:38.205618+00:00
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