curl --request GET \
  --url https://sandbox.withclasp.com/employer_documents/{public_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "employer": "<string>",
  "file": "<string>",
  "name": "<string>",
  "document_type": "summary_of_benefits_and_coverage",
  "created_at": "2023-11-07T05:31:56Z"
}