{
  "fields": [{"id":"_id","type":"int"},{"id":"entityId","type":"text"},{"id":"entityType","type":"text"},{"id":"fiwareServicePath","type":"text"},{"id":"recvTime","type":"text"},{"id":"TimeInstant","type":"text"},{"id":"areaServed","type":"text"},{"id":"category","type":"json"},{"id":"controlledAsset","type":"json"},{"id":"controlledProperty","type":"json"},{"id":"dataProvider","type":"text"},{"id":"macAddress","type":"text"},{"id":"serialNumber","type":"text"},{"id":"value","type":"int4"}],
  "records": [
]}