{
    "UserName": "your username",
    "Password": "your MD5 of password",
    "FlightClassId": 856529,
    "OldData": {
        "FareId": 5993,
        "ExtraCommissionPercent": 0,
        "Capacity": 10,
        "CapacityShowCount": 9,
        "AirlineReference": ""
    },
    "NewData": {
        "FareId": 5993,
        "ExtraCommissionPercent": 0,
        "Capacity": 9,
        "CapacityShowCount": 9,
        "AirlineReference": ""
    }
}