{
  "manageEntity": {
    "action": "Save",
    "entityId": "824593",
    "entityType": "Track",
    "nonce": "0x34e89c32903d261884f00b1ba4331a53fe3e01eff31d721b369a470de1c92730",
    "signature": "0x2054b740b8e39b769e37d420db413363a67a85b41ddc309d0c54c26fb4a6f3616f25f8d1c4b34f06326cb50d073f5f586577c05a98ecaf8f2b47d9274c6d28da1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}