curl --request GET \
  --url https://api.sanka.com/v1/public/subscriptions/{subscription_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "contact_info": [
    {
      "id": "<string>",
      "name": "<string>",
      "email": "<string>",
      "phone": "<string>"
    }
  ],
  "items": [
    {
      "id": "<string>",
      "amount": 123,
      "name": "<string>",
      "price": 123,
      "status": "<string>"
    }
  ],
  "number_item": 123,
  "status": "<string>",
  "subscription_status": "<string>",
  "start_date": "2023-12-25",
  "currency": "<string>",
  "total_price": 123,
  "prior_to_time": "<string>",
  "frequency": 123,
  "frequency_time": "<string>",
  "tax": 123,
  "shipping_cost_tax_status": "<string>"
}