add a single data to serializer in django

Question

I'm writing an API where the user's followers are listed.I also want to send the total number of followers in this API.But the totalFollower field keeps repeating.I only want it sent once. Like that:

[
totalFollower:2
followers:
{
    {
        "following": "gizli_takip",
    },
    {
        "following": "herkeseacikvetakip",
    }
}]

MY serializer

class SerializerUserFollowings(serializers.ModelSerializer):
following = serializers.CharField(source="follower.username")

totalFollower = serializers.ReadOnlyField()
class Meta:
    model  = ModelFollower
    fields = ("following","totalFollower")