/file/upload api param

gistfile1.txt

{
  "recordings": [
    {
      "recording_name": "dir1",
      "files": [
        {
          "filename": "filename1",
          "bytestring": "bytestring1"
        }
      ]
    },
    {
      "recording_name": "dir2",
      "files": [
        {
          "filename": "filename2",
          "bytestring": "bytestring2"
        }
      ]
    }
  ]
}