{
  "manageEntity": {
    "action": "Save",
    "entityId": "406104",
    "entityType": "Track",
    "nonce": "0x767244845d5930d9aacac01fca52b2bed1f0a78760f9d7cc124f8884fc6e9acc",
    "signature": "0x1b0c6c47fb3db7d83c145f79f07efbd4159c813ebc129f51520edd35174183510d69f75e4fa170a68b5a729a1b6cd3ab69b606e21f94dfb39359973e90e16fc91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}