Get an audience attribute

curl --request GET \
  --url https://your_a2_service/audiences/attributes/{id} \
  --header 'Authorization: Bearer <token>'

{
  "code": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "no": 123,
  "owner_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "updated_at": "2023-11-07T05:31:56Z",
  "value_count": 123,
  "visibility": "public"
}