how to store json to database in rails

have URl want to store json data to database automatically

site provide this code but use Java

HttpResponse response = Unirest.get("https://xproject.restdb.io/rest/data")
  .header("x-apikey", "42ba8a6dc7532aa8319a58310281665e394e4")
  .header("cache-control", "no-cache")
  .asString(); 

This Example of json

model called speed contain speed & id
need save gps_speed_kph = speed & id_watch ==_id