{
  "manageEntity": {
    "action": "Save",
    "entityId": "1065010894",
    "entityType": "Track",
    "nonce": "0xe1101feebe8165607041b8ccef25a2de9270ecadcd12bb611879913f84175a75",
    "signature": "0x99610051e696bea41c31579783bb303e50cb56af6a73a765d500d541a5aec26e566bc4c17ffffe2fc53082f995b311c9cbbe25fd0f9612951998ed998bfb42871c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}