{
  "manageEntity": {
    "action": "Save",
    "entityId": "694725",
    "entityType": "Track",
    "nonce": "0x2eef9a1c158dec6044a57869e0ec999abd68bf189b1fe4ae20846a727517676b",
    "signature": "0x4a3ffee8cc616f3341fa08c729946474663bf72a74f7e53a6ad15a10130f95a156346f1f34808398a630a9a1dcdfcf2b2f27336b677da3147b927cce061e7a0f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}