{
"manageEntity": {
"action": "Save",
"entityId": "775465983",
"entityType": "Track",
"nonce": "0x956ee16bafd60c1fa20e26b259ea57a284d541800794372244f5f448c8fca462",
"signature": "0x0e19cf5fc4233a955b74ed542ebe4be6c72de863f5c16776d1b7d4ca7504d8722ca12ff555080090c3ed37f3a85c2a97aefb0ae51fb4a3a504f8a46c4977856f1b",
"signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
"userId": "633924738"
}
}