curl --request PUT \
  --url https://channels-service-alpha.fourvenues.com/tickets/{id}/refund \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '{
  "amount": 10
}'

{
  "data": {
    "_id": "5f8d0f8b9d2b3b0017b6d8a0",
    "event_id": "5f8d0f8b9d2b3b0017b6d8a0",
    "ticket_rate_id": "5f8d0f8b9d2b3b0017b6d8a0",
    "qr_code": "ABCDE12345",
    "status": "active",
    "price": {
      "_id": "1643064796675",
      "name": "Early Bird",
      "price": 12,
      "valid_until": "2022-01-01T00:00:00.000Z",
      "quantity": 0,
      "fee_type": "percentage",
      "fee_quantity": 10,
      "includes": "1 Drink",
      "additional_info": "Only valid before 2:00 am."
    },
    "payment_currency": "EUR",
    "channel_id": "5f8d0f8b9d2b3b0017b6d8a0",
    "fees": {
      "organization": 1.1,
      "discocil": 0.7
    },
    "full_name": "John Doe",
    "phone": "1234567890",
    "email": "john.appleseed@fourvenues.com",
    "gender": 0,
    "birthday": "1990-01-01",
    "address": "123 Main St, New York, NY 10001",
    "postal_code": "10001",
    "country_code": "ES",
    "personal_document_type": "dni",
    "personal_document_number": "1234567890",
    "answers": [
      {
        "question_id": "1234567890",
        "answer": "Answer"
      }
    ],
    "supplements": [
      {
        "supplement_id": "1234567890",
        "price": 1
      }
    ],
    "refunded": 10,
    "refunded_at": "2020-10-19T07:00:00.000Z",
    "refunds": [
      {
        "channel_id": "5f8d0f8b9d2b3b0017b6d8a0",
        "amount": 10,
        "at": "2020-10-19T07:00:00.000Z"
      }
    ],
    "for": 1,
    "enter": 1,
    "entry_time": "2022-07-19T07:00:00.000Z",
    "total_supplements": 2,
    "total_fees": 1.1,
    "total_price": 16.1,
    "warranty": {
      "total": 1,
      "hours": 12
    }
  },
  "success": true
}