{
  "manageEntity": {
    "action": "Save",
    "entityId": "1058184128",
    "entityType": "Track",
    "nonce": "0x1127387d7e71cd244f8aad9969b7810a0794b72362c691066153444adead482d",
    "signature": "0x53075574509c07223bd0b1b31bbf8d96c2124df036ee15adb964daa031b6f2050274998b47f8218b51dbf8f812e671c4a999b64042ed8d2393ef94a6314bf5ba1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}