{
"manageEntity": {
"action": "Save",
"entityId": "393523",
"entityType": "Track",
"nonce": "0xa6b78657e58940be125a263c68e92db450818eb82ff9592df7488a98d24f05f2",
"signature": "0x06a352961770cb864ccfef0aabd191b32cd412546f399d019fc261686313b5525cab170993f0e0c8ffecbaa709e1499c73fd0147fc6f73fac9de6a9e7f6c9faa1c",
"signer": "0xbcF27CD259a120e92577BC7a7EB95670b3A0E2fA",
"userId": "105402635"
}
}