{
  "manageEntity": {
    "action": "Save",
    "entityId": "1962923310",
    "entityType": "Track",
    "nonce": "0xe5d8d3ae743be46045ff4a3a26273e3df5f5a21d1981b8b9cf566bf961151693",
    "signature": "0xa4b03f63366e1eb4476d9bdc4df35be17300c64fba538b4692bff8c8a70343a26d7a9fbc8b01f55bbf7c69616eeb6adf11ac4aa10def88ec5d3181d8554664b11c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}