{
"manageEntity": {
"action": "Save",
"entityId": "465128806",
"entityType": "Track",
"nonce": "0x03dd04286a75e267df5a8fe15c79c47d581567f256cd89b7bd7426606c44c010",
"signature": "0x4724e887ac590cc41ac78f688dc8f3a61d6c6a947cbd9fc58763b4219926807b35525bdfd6e79f36270578b19296322dede868ebf9d76be687455ee2469f27d31b",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}