{
"manageEntity": {
"action": "Save",
"entityId": "914420433",
"entityType": "Track",
"nonce": "0x37541358d51a6eef4134f69bb0d7036ac1239a7418155628e58dcab02ab53bd5",
"signature": "0xff2c89bf0faa627e16014b553ee9b39d976b0313df970a4f1a377ad09fd6fdbc420e5ba92f75d76564b6ebc1f3cf65838775f6d69f83663b0a8d2284805847e41c",
"signer": "0xF092Ce2889Ee6490A601Ddc0986c585faE589CB5",
"userId": "658799981"
}
}