{
  "manageEntity": {
    "action": "Save",
    "entityId": "416227",
    "entityType": "Track",
    "nonce": "0x0780945ba9f94845c7b601856e6b39f14084742d4dc0fd7fef42f2dbd7b2e824",
    "signature": "0x7bb7023c788e6ae4aca156182f5feb4ec73ce0bbdd0adb37decce7291687bbbb3b84dacbf195ca06bc33c096456d0879f15cacd42412f93e977137bfa0c3d46e1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}