curl --request POST \
  --url https://api.example.com/api/v1/addons \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "price_id": "<string>",
  "product_id": "<string>",
  "description": "<string>",
  "max_instances_per_subscription": 123,
  "self_serviceable": true
}
'

{
  "created_at": "2023-11-07T05:31:56Z",
  "id": "<string>",
  "name": "<string>",
  "price_id": "<string>",
  "product_id": "<string>",
  "self_serviceable": true,
  "archived_at": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "fee_type": "RATE",
  "max_instances_per_subscription": 123
}