{
"manageEntity": {
"action": "Save",
"entityId": "1732433912",
"entityType": "Track",
"nonce": "0x8a80c49ee5af794eea3eea2854019f15147e5c2d0b8b5ade2da27196a17be70a",
"signature": "0xa5aa0e849e79dbb1ef256abd51372916bbee9390c5fbce10878608607f952de9292fb341eb120a23dbb40ea20efc096fb1510e41699b688d72df16452546819e1b",
"signer": "0xf954E35976C0aAaEC2968197F2a371Cc99E7C81A",
"userId": "102143"
}
}