{
  "manageEntity": {
    "action": "Save",
    "entityId": "2066981024",
    "entityType": "Track",
    "nonce": "0x73f43a4a8569d92ebd7c264ac855d1e995df425dbe49f925689a2567ef058091",
    "signature": "0x56f7918f7774db7fab49970902559ef08fea1b68e2224a5ed061eaf78bdf64f049e8034c42c132e9c8e38568ccd1b0251614768d69fb52521c685a5e0409d73b1c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}