Запрос:

{
        "jsonrpc":      "2.0",
        "method":       "vm-billing",
        "id":           "858b11a8-ccc3-11e9-a588-e4d15929abe7",
        "params":       {
                "vm_id":        205,
                "begin_time":   1567342800,
                "end_time":     1567347642
        }
}

Ответ:

{
   "id" : "858b11a8-ccc3-11e9-a588-e4d15929abe7",
   "jsonrpc" : "2.0",
   "result" : {
      "code" : 1,
      "data" : {
         "results" : [
            {
               "series" : [
                  {
                     "columns" : [
                        "time",
                        "rx_bytes",
                        "tx_bytes"
                     ],
                     "name" : "virtio_net",
                     "values" : [
                        [
                           "1970-01-01T00:00:00Z",
                           2328943108,
                           78679228
                        ]
                     ]
                  }
               ],
               "statement_id" : 0
            }
         ]
      }
   }
}