{
  "manageEntity": {
    "action": "Save",
    "entityId": "1286460304",
    "entityType": "Track",
    "nonce": "0x86861c67cd7dcc53f204d9a0f13d1887f4dfe6a11a9a057adc50acf866e7bb99",
    "signature": "0x5cb4d36ca6a238e6674e33ba6366a8543017aa67b0d6bc3c96d11ca741abc24601233822e90ff673a82eaaf11422a28dd50c188dbe16a8d624ab1516a82de4e81b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}