{
"manageEntity": {
"action": "Save",
"entityId": "555834",
"entityType": "Track",
"nonce": "0x9bb669b13e8a43c390de4aef837c2e4a52276ffafa6808301e154491cdb64474",
"signature": "0x06906eec516aad7243c415495e56dc000f4b47899d0fac6ec4df9f81b2fa3c7645ef774022337fccabd94d69fedba9c546baaf95a3858e6df45e00277d05fa9a1b",
"signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
"userId": "881446128"
}
}