A class that offers a method that will merge the properties of the current object using a dictionary and raise propertychanged events for each item.

ObservableModel.cs

public abstract class ObservableModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged = delegate { };

    public void Merge(IDictionary<string, object> updates)
    {
        var selfType = GetType();

        foreach (var prop in updates)
        {
            selfType.GetProperty(prop.Key).SetValue(this, prop.Value);
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(prop.Key));
        }
    }
}

// Usage:
Model.Merge(new Dictionary<string, object>
{
    [nameof(Model.Property1)] = prop1,
    [nameof(Model.Property2)] = prop2,
    [nameof(Model.Property3)] = prop3
});