{
  "manageEntity": {
    "action": "Save",
    "entityId": "695298",
    "entityType": "Track",
    "nonce": "0x64dc4d31448abdfd691d06b472f57d8de892cf7d02e5df6f093a7b29f7937e28",
    "signature": "0x17fd1fb7dafe933d9097185113aede4360cf26eb4fcf2600b8fe456a9a3a252b1d0c9d0de07bbe7fddeff5e03d2430824065ae3d75f5b7c170f9543b9b26b7971b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}