{
  "manageEntity": {
    "action": "Save",
    "entityId": "1084665459",
    "entityType": "Track",
    "nonce": "0xbb4a222a4626e6b0f60c52f1f54092554cc2abd5d64add66cc0160fbdc99ca65",
    "signature": "0xb2b17b1958c7024224d8a29b8e075649891334f88474b6ac90732f724c18767d7843490212d2b2f55b18ceb7ecb10f2f191e770f6813a02343ba43312577435d1c",
    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
  }
}