{
  "manageEntity": {
    "action": "Save",
    "entityId": "1767172159",
    "entityType": "Track",
    "nonce": "0x86a979a19761ce2f8738dc54a2ba7c37438a7ab43b3e7cc7b03ab614923039ba",
    "signature": "0x9e2c53ce4b442ed535654911f6102ffed0faa05b0c60f2195bed17c0d806f6ef11b8a26ed0f1841ed8fb481f7a49281f6d72ffa9a69ba93886ff824386071edf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}