{
  "manageEntity": {
    "action": "Save",
    "entityId": "1238213225",
    "entityType": "Track",
    "nonce": "0xf06518edb27dde7291ada442813ecbf7390368c8ac9a3364dd479c6ad728739c",
    "signature": "0xcedab4fa9acad7df27c472d5ef64d48272b7b5528a91a39372250e8f9ed7791259ac6a7251ce87570a1c8cfd349fd7b7f60310e719164f2bb4d052ccfa4a0add1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}