{
  "fields": [{"id":"_id","type":"int"},{"id":"year","type":"numeric"},{"id":"month","type":"numeric"},{"id":"country_from","type":"text"},{"id":"city_to","type":"text"},{"id":"count","type":"numeric"}],
  "records": [
    [1,2020,1,"Vietnam","Busan",56],
    [2,2020,2,"Vietnam","Busan",17],
    [3,2020,3,"Vietnam","Busan",14],
    [4,2020,4,"Vietnam","Busan",3],
    [5,2020,5,"Vietnam","Busan",54],
    [6,2020,6,"Vietnam","Busan",20],
    [7,2020,7,"Vietnam","Busan",38],
    [8,2020,8,"Vietnam","Busan",41],
    [9,2020,9,"Vietnam","Busan",44],
    [10,2020,10,"Vietnam","Busan",83],
    [11,2020,11,"Vietnam","Busan",69],
    [12,2020,12,"Vietnam","Busan",52]
]}