{
  "jsonrpc": "2.0",
  "id": 0,
  "result": {
    "response": {
      "data": "{\"size\":0}",
      "version": "0.16.1",
      "app_version": "1314126"
    }
  }
}

{
  "id": 0,
  "jsonrpc": "2.0",
  "error": "Description of failure"
}