{
  "manageEntity": {
    "action": "Save",
    "entityId": "822589584",
    "entityType": "Track",
    "nonce": "0x60875dd10c46a8cf7e04895ff9e3d4d0e20d941bacb7aa535a7ef6277a52b16b",
    "signature": "0x95dc3e1965eb878d869613114b6173db0055ffa0e5b6e428e37d1f4f8d062e747497c4f1eebbdba5ec08755aeac64bb598078a1e780df12dd4c62eba72b95c101b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}