{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176656185",
    "entityType": "Track",
    "nonce": "0x723a5b5475f0a81770d8b52b7a8373f678c2162c2ffd35730dfefb0c5ccfd189",
    "signature": "0x29919ef6adb57df0f985ec3099ed602a31fa6a007f59559dfac85a5ebec6e77e01c7cff2869fa1ff02a902155e4f34abe9da1e10a59e2f6cef695f95e34a86e31b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}