{
  "manageEntity": {
    "action": "Save",
    "entityId": "736952026",
    "entityType": "Track",
    "nonce": "0xd65f866dbef6ff316e779b10e7ffe3b6d448494193394fc29795e72e4f4b3511",
    "signature": "0x647b54fa292db08062f2ec5ea948500eb046e577249c978b31bce087e1c9502c659abcfa36c6f16cb018846dbc9d95fb7dd7388abeb28445b59f8109ca705efd1c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}