{
  "manageEntity": {
    "action": "Save",
    "entityId": "814691161",
    "entityType": "Track",
    "nonce": "0x34f4d97e97c0189d701421ad756b24e41344813b71c9c4137de923eee3602029",
    "signature": "0xc2d3fe9a33784a7f4e91a164b7bd14632c925a4fb7ca0a282a8d587601fab6442537ceee422e57af811e029eb057a518247cf47d2418f0527910caa65d0bff3a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}