Retrieve currently active default rates

Example response

{
  "success": true,
  "data": {
    "id": "123e4567-e89b-12d3-a456-426614174001",
    "version": "v1-2024-01-13T15:00:00Z",
    "is_active": true,
    "created_by": "system_seed",
    "created_at": "2024-03-19T12:00:00Z",
    "updated_at": "2024-03-19T12:00:00Z",
    "rates": [
      {
        "id": "123e4567-e89b-12d3-a456-426614174001",
        "defaultRatesId": "123e4567-e89b-12d3-a456-426614174001",
        "merchantRatesId": "123e4567-e89b-12d3-a456-426614174001",
        "type": "domestic_percent_fee",
        "value": 1,
        "unit": "%",
        "base": "gross_amount",
        "conversion_currencies": {
          "source": "EUR",
          "destination": "GBP"
        },
        "notes": "Standard domestic fee"
      }
    ]
  }
}