{
  "manageEntity": {
    "action": "Save",
    "entityId": "35259894",
    "entityType": "Track",
    "nonce": "0xaccb958cce37a54ba1ae29679ff710fedf23fb670c3af3ace01da3c033df6a99",
    "signature": "0xd1dfb64e467e3285690d37c5ed7700bf454b35eed9fc2bf309ac62729eb9f5137cb4ae4c064e409a23c8f5639832cf72f205bb7072af1998937ef8acb299e69d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}