{
  "manageEntity": {
    "action": "Save",
    "entityId": "2083451445",
    "entityType": "Track",
    "nonce": "0xf9bf223e592310cc5fd11b6c6ce88c0d28afa27804d48b53440db134b73f1168",
    "signature": "0x271251ca5fe5fab7ab26da4dea09cee5fcd1759d0d1e6d1f7fd1086e4f072b41232a59e8cb9d6d13b1afbf68938571432998fdaabc7edf732a3597e392d69f671c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}