{
  "manageEntity": {
    "action": "Save",
    "entityId": "227863",
    "entityType": "Track",
    "nonce": "0xceb4c5b14fd3a3684572a96a0e1d021e678eabcd01f243daad76c0da36ef4d91",
    "signature": "0x050e1f168fad1d50f3c2dddaea23f468f90b3491f32e1985ee6f50f75916f507185b9ba207cf3091c28a3702a9fc31dbf9aa3d41813cc1113cb884ff3ebc87881b",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}