{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059606467",
    "entityType": "Track",
    "nonce": "0xac5e6739a2604aba69a3089320c11100a9873b06f2bd8d564541b1222ff6e545",
    "signature": "0x396402cc051c03208b73f00957cc4ca5b1fd4d54f45ac487dbf33742de9181171bd2f8bd091c9f01d3b7e115bdc4f5d0520a30f7c3868e2ed3e94f502bfd0a051b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}