{
"manageEntity": {
"action": "Save",
"entityId": "1461131092",
"entityType": "Track",
"nonce": "0xdf7f5edb5fd91ad636a120fbff96063c780c531df172f2c10b17c5922f120a00",
"signature": "0xeb1e7f4c31f9549b17257b87c6e113ca88f7d48921c70e361ad019bc01f51843637afcc301bbb199a2feb89e332abd8fb2ba1c687ee835a2e88c41c1b683cbe21c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}