Get shuttle groups

{
  "suppliers": [
    {
      "id": 1,
      "name": "Supplier A",
      "areas": [
        {
          "name": "North",
          "lines": [
            {
              "name": "Blue",
              "directions": [
                {
                  "id": 10,
                  "name": "Eastbound"
                },
                {
                  "id": 11,
                  "name": "Westbound"
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}