{
  "manageEntity": {
    "action": "Save",
    "entityId": "230233",
    "entityType": "Track",
    "nonce": "0x1b23dd3b292df43c9640d28eb8f243722dd115dcd205997c5a980bf60efeb6ee",
    "signature": "0xd8bff6012b746560049a13a77d824afd90dbd4e6961a4a2fce0f2278cb6620910f12e9bfe05d7c2c28994173acdfc900b6d1a855d7a1e6ae80fdfd9444a69b401c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}