curl --request POST \
  --url https://api.example.com/refunds \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "requestId": "e574a229-bb2c-42b3-b144-69f64d9a73da",
  "billEffectiveDate": "2026-03-15T14:27:33.000Z",
  "billType": "PRO_RATED_REFUND",
  "billId": "ca11419d-8143-43f2-af5d-0259b85a2fca",
  "originalChargeId": "c699aa49-35ea-4a23-9c3e-4479413db91d",
  "refundId": "d56442de-ca64-411f-8585-830291b3d6cf",
  "refundAttempt": 0,
  "isRetry": false,
  "amount": 900,
  "currency": "USD",
  "consumer": {
    "consumerIdentifier": "RFBNZ2MU3Y35OA5GNNNGETK6JTEVRYVB",
    "billingIdentifier": "BWNMJXEDAO7HTK6Q4SBAOEJMPGURUB3K"
  },
  "resourceType": "CONSUMER_OFFER",
  "consumerOffer": {
    "consumerOfferId": "338d31e1-a289-40dd-beff-ab41c1fc5f51",
    "offerId": "7560fca0-d8a9-4124-a172-924debec874e",
    "entitlements": [
      {
        "entitlementId": "b0163d06-1fa3-4c9b-a298-29635ca7151d",
        "contentProviderId": "NETFLIX",
        "productId": "0d83e344-62b3-44a8-adb5-59b835ef6cf7",
        "productTierKey": "NETFLIX_STD_ADS"
      }
    ]
  },
  "billingDetails": {
    "planType": "SUBSCRIPTION",
    "billingPeriod": {
      "phaseType": "FULL_PRICE",
      "duration": "P1M",
      "renewalFrequency": "P1M",
      "startDate": "2026-03-01T01:00:00.000Z",
      "endDate": "2026-04-01T00:59:59.999Z"
    }
  },
  "lineItems": [
    {
      "lineItemType": "OFFER_TIER_CHANGE_PRORATION",
      "quantity": 1,
      "amount": 900,
      "currency": "USD",
      "entitlementId": "b0163d06-1fa3-4c9b-a298-29635ca7151d"
    }
  ]
}
'

{
  "requestId": "f8e7d6c5-b4a3-4c2b-8d1e-9f0a1b2c3dff",
  "responseCode": "APPROVED",
  "partnerRefundId": "585a95dd-b9d2-4d7b-b696-5ef001ee2d36"
}