{
    "sheets": ["Imported"],
    "ranges": [
        {"sheet": "Imported", "row": 0, "column": 0,
         "fields": [
             {"path": "$[]['id']"},
             {"path": "$[]['first_name']"},
             {"path": "$[]['last_name']"},
             {"path": "$[]['email']"}
         ],
         "row-groups": [
             {"path": "$"}
         ]
        }
    ]
}