curl -i -X POST \
  -u 224575:MYAPIKEY \
  https://sandbox-secure.xsolla.com/api/v2/project/224575/admin/payment/token \
  -H 'Content-Type: application/json' \
  -d '{
    "user": {
      "id": {
        "value": "myUserID"
      }
    },
    "purchase": {
      "sandbox": true,
      "items": [
        {
          "sku": "mySKU",
          "quantity": 1
        }
      ]
    }
  }'

curl -i -X POST \
  'https://store.xsolla.com/api/v2/project/{project_id}/payment/item/{item_sku}' \
  -H 'Authorization: Bearer <YOUR_JWT_HERE>' \
  -H 'Content-Type: application/json' \
  -d '{
    "sandbox": true,
    "quantity": 5,
    "settings": {
      "ui": {
        "theme": "63295a9a2e47fab76f7708e1",
      }
    },
    "custom_parameters": {
      "character_id": "ingameUsername"
    }
  }'