curl --request GET \
  --url https://api.scholarlysoftware.com/api/v1/departments/{id}/parent \
  --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
    }
  }
}