{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059465068",
    "entityType": "Track",
    "nonce": "0xb410929ede8e7ed47624fd521d0b4d645558152abed2741b04b24736146670a6",
    "signature": "0x2dae16653f61404f4e53d2dbb0f8082bfa5d827db64ba404dbb850605bb06687691d52dad249d0447482c4ba394894e1c8662e799d9a587b59e5b161754d81c71b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}