{
  "namespace": "geo",
  "key": "2019-05",
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  "metadata": {
    "start_date": "2019-05-01",
    "end_date": "2019-05-31",
    "accessions": 732475,
    "failed": 55,
    "GSE": 29080,
    "GSM": 703254,
    "GPL": 86
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}