curl --request POST \
  --url https://api.fungies.io/v0/elements/checkout/create \
  --header 'Content-Type: application/json' \
  --header 'x-fngs-public-key: <api-key>' \
  --header 'x-fngs-secret-key: <api-key>' \
  --data '
{
  "offersIds": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ],
  "name": "<string>",
  "customFields": [
    {
      "id": "<string>",
      "value": "<string>"
    }
  ]
}
'

{
  "status": "<string>",
  "data": {
    "checkoutElement": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "status": "ACTIVE",
      "offers": [
        {
          "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "object": "offer",
          "internalId": null
        }
      ],
      "object": "checkoutElement",
      "name": null,
      "subscriptionOffer": false
    }
  }
}