{
  "manageEntity": {
    "action": "Save",
    "entityId": "85994",
    "entityType": "Track",
    "nonce": "0x8072d3a46274724cbe80f438d8d0a81aa803fb5e11568b74db4b2287e24bb5c0",
    "signature": "0x2376b6825f40521434f06bf6fc1a55ebafc2e59677b309e04c371c1fe7dceb2818248d543313a575c5d83004144bd7048639f4854cf614a62216475c6e568dcb1c",
    "signer": "0x4D11c3319e766BE8ad4bD57B7E1C96300e25bcd3",
    "userId": "261446337"
  }
}