curl --request GET \
  --url https://{defaultHost}/v5/app/members/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "company_id": "<string>",
  "user_id": "<string>",
  "status": "drafted",
  "most_recent_action": "canceling",
  "joined_at": 123,
  "user": {
    "id": "<string>",
    "name": "<string>",
    "username": "<string>",
    "email": "<string>",
    "profile_pic_url": "<string>",
    "created_at": 123,
    "profile_pic_url_32": "<string>",
    "profile_pic_url_64": "<string>",
    "profile_pic_url_128": "<string>"
  }
}