public class ValueInteger
{
    [JsonIgnore]
    public string ValueName { get; set; }

    public int Value { get; set; }

    [JsonProperty("timestamp")]
    public UInt64 TimeStamp { get; set; }

}

var valueInt = new ValueInteger
    {
        ValueName = "mycounter",
        Value = 7,
        TimeStamp = 1010101010
    }

{ mycounter: 7, timestamp = 1010101010 }

[JsonRedirect(titlePropertyName: nameof(ValueName))]
    public int Value { get; set; }