{
"manageEntity": {
"action": "Save",
"entityId": "345195100",
"entityType": "Track",
"nonce": "0x6dea8eab8883779e3208188e729619458374b5b560e24ba8eba518c9b5b2329a",
"signature": "0xecb5355f955c694b0014c8ad0904a23dd1a53e26ea0d8f933ffd19287385aff25cde23a5f3d830b9061221914f436053b21292b4e6cd5439b1be110930f6d9141c",
"signer": "0xD967b68365738013c9197659aAb46EB73a488080",
"userId": "488430169"
}
}