{
  "manageEntity": {
    "action": "Save",
    "entityId": "944022326",
    "entityType": "Track",
    "nonce": "0xcca11c7e66b3a2ce9ed04d2e0f91b9e6583dc06659da3d23e6adc5aa65208868",
    "signature": "0xfb3e146b9c8130f9e49e6092dd1e3cf6879e81d1c002a6639bedd3a45678830313fb02d950dab05b63eb224c1b823de29752248424ccce50b7170f6afd7927281c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}