{
"manageEntity": {
"action": "Save",
"entityId": "1891221162",
"entityType": "Track",
"nonce": "0xb6dbb0255f793027359552b4f63adc60b8b74279fc566aa46730befd2a6c0b9f",
"signature": "0xcecfda7bb726ce7081c7d945fcf6517d75f5598dc40a6b2128c1210f14df282841c67726d406074538ee00ea02279420cfa505d3b80dea718d0ed388c3be07a01b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}