Utils.cs

/// <summary>
/// Represents object instance properties as a string
/// </summary>
/// <param name="o">Any object to represent its properties</param>
/// <returns>String { prop1: value1 prop2: value2 ... }</returns>
private static string InstancePropertiesToString(object o)
{
  var stringBuilder = new StringBuilder("{ ");
  foreach (var property in o.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
  {
    stringBuilder.Append($"{property.Name}: {property.GetValue(o) ?? "null"} ");
  }

  stringBuilder.Append("}");
  return stringBuilder.ToString();
}