{
  "manageEntity": {
    "action": "Save",
    "entityId": "1842624055",
    "entityType": "Track",
    "nonce": "0xf5f2322b53788e8e93b3c94c88df1337d23af0934af0db3abc62944fd6ead5ac",
    "signature": "0x650ab1885fe86ece3a20c31d309aaa64eac2a7e03852f3f29da6ec1cac6af64e1285b447bf8761ce5a2f28e73f940b17cc4df0ef930b81b3972c615f6726dc281c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}