Help me how to get nested json

hy all can you help me… i want get this json but i always failed

nested json.

{
  "data": [
    {
      "ID_JENIS": 1,
      "NAMA": "Jurnal Umum",
      "TOTAL": 3
    },
    {
      "ID_JENIS": 2,
      "NAMA": "Pembelian",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 3,
      "NAMA": "Retur Pembelian",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 4,
      "NAMA": "Purchase Order",
      "TOTAL": 2
    },
    {
      "ID_JENIS": 5,
      "NAMA": "Purchase Quotation",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 8,
      "NAMA": "Sales Order",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 6,
      "NAMA": "Penjualan",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 7,
      "NAMA": "Retur Penjualan",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 9,
      "NAMA": "Sales Quotation",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 10,
      "NAMA": "Pembayaran Hutang",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 11,
      "NAMA": "Pembayaran Piutang",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 12,
      "NAMA": "Kas Masuk",
      "TOTAL": 2
    },
    {
      "ID_JENIS": 13,
      "NAMA": "Kas Keluar",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 21,
      "NAMA": "Kode Proyek",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 16,
      "NAMA": "Transfer Barang Antar Gudang",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 14,
      "NAMA": "Penghapusan Piutang (Write Off Piutang)",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 15,
      "NAMA": "Penghapusan Hutang (Write Off Hutang)",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 17,
      "NAMA": "Penyesuaian Persediaan",
      "TOTAL": 1
    },
    {
      "ID_JENIS": 18,
      "NAMA": "Penentuan Harga Jual",
      "TOTAL": 0
    },
    {
      "ID_JENIS": 22,
      "NAMA": "Uang Muka Pembelian",
      "TOTAL": 0
    }
  ],
  "error_msg": null,
  "paging": null
}

this is my link json
http://202.179.137.23:8077/boaapproval/?mod=Menu

http response type should be “application/json” instead of “text/html”.

http://tools.seobook.com/server-header-checker/?url=http%3A%2F%2F202.179.137.23%3A8077%2Fboaapproval%2F%3Fmod%3DMenu&useragent=8&protocol=11

This is not the “application / json” format so what should I do … please help me