{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085184613",
    "entityType": "Track",
    "nonce": "0x38eaf28069f845b91e60a2c951ec6c35d168dbdc99d25ddbfe894d75efcca75a",
    "signature": "0x5c66452a683cb958bd9cca0d2b8587fd69f108a6bd380afccf17a0dd4295754365ec4652b59ddf9e5b17f9af0a65b0114989989abd5710774d0c28c64f80ffaa1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}