{
  "fields": [{"type":"int","id":"_id"},{"type":"numeric","id":"Anno"},{"type":"numeric","id":"Importo"},{"type":"numeric","id":"Appalti"}],
  "records": [
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    [2,2017,24000000,6],
    [3,2018,40500000,6],
    [4,2019,35500000,4],
    [5,2020,90640000,13]
]}
