{
  "manageEntity": {
    "action": "Save",
    "entityId": "87920",
    "entityType": "Track",
    "nonce": "0x6c8ebf3bdc31d92472a449bff307392cc1069c404b902f82c27c62194094073f",
    "signature": "0xd4ab0199e5fcaaee3fdcfc7daa1ab928122122b68d68238bb5636ccd8494ff210c70b579563f93d45776e94175bbcd5c780f820e474db21d5f68bc8f408b4acf1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}