{
"manageEntity": {
"action": "Save",
"entityId": "194530616",
"entityType": "Track",
"nonce": "0xa4bec4ab6c9aa3a9b38bceb40072cbd778e38f1860b0a6fe811a8792ff0dee29",
"signature": "0x9ef9659e4df98868cf4ca845e0c57c72ff4e7badd2d588f39c77db2e8407da317f46e146a6aa430db7424917a49a13ffa20df51604e70f96449c1af9082960621b",
"signer": "0xa82670FA9B885fC5E3790543627F6F4A7A5e6D65",
"userId": "797142451"
}
}