curl --request GET \
  --url https://api.scholarlysoftware.com/api/v1/departments/{id}/children \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "type": "department",
      "attributes": {
        "created_at": "<string>",
        "updated_at": "<string>",
        "name": "Computer Science",
        "label": "Department",
        "external_id": "DEPT-001",
        "head_label": "Department Chair",
        "is_root": true
      },
      "relationships": {
        "parent": {
          "links": {
            "related": "<string>"
          },
          "meta": {}
        },
        "children": {
          "links": {
            "related": "<string>"
          },
          "meta": {}
        },
        "department_chairs": {
          "links": {
            "related": "<string>"
          },
          "meta": {}
        }
      },
      "meta": {
        "children_count": 123,
        "depth": 123,
        "root": true
      }
    }
  ],
  "meta": {
    "page": {
      "size": 123
    },
    "total": 123
  },
  "links": {
    "self": "<string>",
    "first": "<string>",
    "next": "<string>",
    "prev": "<string>",
    "last": "<string>"
  }
}