curl --request GET \
  --url https://api.utage-system.com/v1/accounts/{account_id}/line/senders/{sender_id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "<string>",
    "name": "<string>",
    "icon_url": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>"
  }
}