{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009896374",
    "entityType": "Track",
    "nonce": "0x26a14ad4ea8c4319ff5cec357ea4ef9f4465b6aa89e0c5e120abbf5b55614dbe",
    "signature": "0xe8c79cca2f79d6e341e8cbe2e4ea4371cdeb030359d3a520fb2792e84df4277b328c8196559180a5c9cfaf12e30f6b9f7b6f5a6c3ef3de13619f989031e9a6c71b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}