{"completed_at": "2026-05-06T07:45:22.397866Z", "url": "https://ftp.ncbi.nlm.nih.gov/sra/reports/Mirroring/NCBI_SRA_Mirroring_20260506/meta_study_set.xml.gz", "entity": "study", "date": "2026-05-06", "is_full": false, "parts_written": 1}