{
  "manageEntity": {
    "action": "Save",
    "entityId": "1424312401",
    "entityType": "Track",
    "nonce": "0x1a53abd9da52a25ae97020eaa2e8e279946402210e19d558a6f10a0eb0361439",
    "signature": "0xd356b8feea7a1da862f052134ce5ba6fa4ce72c07533cefac45ea66cc3c084ae7fb2df5e57535f3f799fdce3b06a83bf97204503b5346fbcd773ab760fe9eff61c",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}