{
"manageEntity": {
"action": "Save",
"entityId": "1303198483",
"entityType": "Track",
"nonce": "0xd892b317bd48a8e20b269f4b5bcf425925cf861ea5595567783f27069ebf5ca2",
"signature": "0x617d254a0d114401d86006a4fea32dee2f3d70db7391757468762865027708176dbec1165f17b8bf018ddc54761e779705f82e7bcd3ae551c74a761a4a80bb591b",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}