{
  "manageEntity": {
    "action": "Save",
    "entityId": "292906",
    "entityType": "Track",
    "nonce": "0xbd4cbb716853ac2a6d04bebd3beb0e7f0ae78090577f4d6bce3359afedcffad6",
    "signature": "0x05e1cb11f030a2a9fcd718ae62be9d55b60ef14d74b26de4a36077316c89deb74f3d20e2525ab4be9873f260bfc58a888ad9525d0d4f4dffd5ca451818aa81761b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}