curl --request GET \
  --url https://staging.api.commercengine.io/api/v1/{store_id}/storefront/subscriptions

{
  "message": "<string>",
  "success": true,
  "content": {
    "subscriptions": [
      {
        "id": "<string>",
        "plan_id": "<string>",
        "plan_name": "<string>",
        "price": 123,
        "start_date": "2023-12-25",
        "end_date": "2023-12-25",
        "trial_days": 0,
        "trial_start_date": "2023-12-25",
        "trial_end_date": "2023-12-25",
        "next_billing_date": "2023-12-25",
        "last_payment_date": "2023-11-07T05:31:56Z",
        "pause_start_date": "2023-12-25",
        "pause_end_date": "2023-12-25",
        "billing_interval": 1,
        "billing_limit": 123,
        "shipping_interval": 1,
        "shipping_limit": 123,
        "coupon_id": "<string>",
        "coupon_code": "<string>",
        "coupon_discount_percent": 0,
        "coupon_discount_amount": 0,
        "coupon_redemption_limit": 0,
        "is_prepaid": false,
        "usage_based_billing": true,
        "usage_based_tiers": [
          {
            "up_to": 123,
            "price_per_unit": 123
          }
        ],
        "grace_period_days": 0,
        "is_cancellation_allowed": true,
        "days_until_cancellation_allowed": 3,
        "currency": {
          "name": "<string>",
          "code": "<string>",
          "symbol": "<string>"
        },
        "metadata": {},
        "created_at": "2023-11-07T05:31:56Z",
        "modified_at": "2023-11-07T05:31:56Z"
      }
    ],
    "pagination": {
      "total_records": 123,
      "total_pages": 123,
      "limit": 123,
      "next_page": 123,
      "previous_page": 123
    }
  }
}