{
    "first_name":   { "max_length": 5 },
    "last_name":    { "max_length": [10] },
    "middle_name": [{ "max_length": [10] }],
    "number1":      { "max_length": 5 },
    "decimal":      { "max_length": 3 },
    "empty_name":   { "max_length": 3 },
    "missed_name":  { "max_length": 3 }
}