{
  "manageEntity": {
    "action": "Save",
    "entityId": "1765638734",
    "entityType": "Track",
    "nonce": "0x55f958fcd46cd2061bb3380862cdfbec5658e94ff1a3c15fadcdcf3a48a44d85",
    "signature": "0x2070880445d1cbe74fdc8c6fea9e4caf9a7bde5be96c12365fbe2ec913b9c9e629d77632215519bbc169b95966e51f0728da0d3edbc5f560b04cae805cbd46041c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}