curl --request POST \
  --url https://apigw.ipxo.com/ecommerce/public/{user_id}/cart/{cart_uuid}/discount-code/{discountCode_code} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "uuid": "86550e1e-5af4-346f-9a93-1181a6313782",
    "total": {
      "currency": "USD",
      "amount": "5405.00",
      "amount_minor": 540500
    },
    "sub_total": {
      "currency": "USD",
      "amount": "5405.00",
      "amount_minor": 540500
    },
    "tax_total": {
      "currency": "USD",
      "amount": "0.00",
      "amount_minor": 0
    },
    "credits_total": {
      "currency": "USD",
      "amount": "0.00",
      "amount_minor": 0
    },
    "discount_total": {
      "currency": "USD",
      "amount": "0.00",
      "amount_minor": 0
    },
    "remaining_total": {
      "currency": "USD",
      "amount": "5405.00",
      "amount_minor": 540500
    },
    "credits_eligible_amount": {
      "currency": "USD",
      "amount": "0.00",
      "amount_minor": 0
    },
    "total_before_tax": {
      "currency": "USD",
      "amount": "5405.00",
      "amount_minor": 540500
    },
    "tax_breakdown": [
      {
        "amount": {
          "currency": "USD",
          "amount": "0.00",
          "amount_minor": 0
        },
        "code": "Test Tax",
        "name": "some-tax",
        "rate": 10,
        "calculator_type": "percent"
      }
    ],
    "discount_breakdown": [
      {
        "amount": {
          "currency": "USD",
          "amount": "0.00",
          "amount_minor": 0
        },
        "code": "Test Discount",
        "name": "some-discount",
        "rate": 10,
        "calculator_type": "percent"
      }
    ],
    "expires_at": "2026-03-03T14:25:30.0000000+00:00"
  }
}