{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167267925",
    "entityType": "Track",
    "nonce": "0x8589990478a325a95dc36910909f1f4a14646392fbe953b3df5401ae525b088f",
    "signature": "0xe372232e83cb99d2f0c7c7cd138fb42efe3b95b53cf21e3889b3dc57c1481fa1155f030426a5803c7daae74f3f4736fa71eaca2187e89a4493832fa98b33a55f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}