{
  "manageEntity": {
    "action": "Save",
    "entityId": "1138063525",
    "entityType": "Track",
    "nonce": "0x6c60f4b114b676ce6c1c49c4fb412db3d1aa541d31f538db92c93d59756307d7",
    "signature": "0xf12722453ab0321739b930dd456574544c9bbc24bce8f96457bf8057f436a6184a3d56de7729b36b35a4730c538394ae289e62f19d0eff127e77b818dd6877ba1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}