{
  "manageEntity": {
    "action": "Save",
    "entityId": "280155",
    "entityType": "Track",
    "nonce": "0xc6610a8e9e72c30daa6801c67431bb5af82d02a927214d18c636518fe131b5bb",
    "signature": "0x9d665de4a784cbd138ef5666ec0d86cb3fb74466b0189f3b0a4a9878d69c7819657699ce2924890a7b8390b1f2823d48ffdce3a230650709397bc679a16b53931b",
    "signer": "0x5a419547Efa7F5AF0F54d60B430cdAD34546AD7F",
    "userId": "461008548"
  }
}