{
"manageEntity": {
"action": "Save",
"entityId": "1901317320",
"entityType": "Track",
"nonce": "0x760ee53bc2d8d79e6755675eeedc6fbd0299c33df1cc2811b11abc1fba36f165",
"signature": "0x92b4a6183f04323fb8a285dcd69e0073c4654b816025e3294de9161d4f15d17e411494f0cb6bca026ab9580604eb251aba0fea81de8bdf4f2c6b3e7733953dad1b",
"signer": "0x67479063A246B10560F7FfC48Dba47268867417B",
"userId": "745004514"
}
}