curl --request PATCH \
  --url https://sandbox.withclasp.com/employers/{public_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "legal_name": "<string>",
  "trade_name": "<string>",
  "external_id": "<string>",
  "phone_number": "<string>",
  "email": "<string>",
  "federal_ein": "<string>",
  "user_assignments": [
    "<string>"
  ],
  "metadata": {}
}
'

{
  "id": "<string>",
  "legal_name": "<string>",
  "external_id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "trade_name": "<string>",
  "phone_number": "<string>",
  "email": "<string>",
  "federal_ein": "<string>",
  "address": {
    "line1": "<string>",
    "city": "<string>",
    "zip_code": "<string>",
    "line2": "<string>"
  },
  "primary_business_unit": "<string>",
  "user_assignments": [
    "<string>"
  ],
  "metadata": {}
}