{
"manageEntity": {
"action": "Save",
"entityId": "2008282508",
"entityType": "Track",
"nonce": "0x297e8da890085761bd2654180ac235611caee702593fb3cb97e1162416c9aa41",
"signature": "0x99961d3838d9ac230312ce3861a475b3e836f24800a49a97d624be9bbd68f91c0a9f9a5efd7ee0d734868fa7b1a7b4dab8aac0952550238ee144c95377260a2c1c",
"signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
"userId": "71569007"
}
}