How to insert image using Django BinaryField and Postgresql Bytea with Django Rest Framework?

I want to insert image to database.

I use Django Rest Framework and Django BinaryField in model and use Postgresql Bytea data type.

This is my code :

models.py

class Question(models.Model):
    question_id = models.BigAutoField(primary_key=True)
    question = models.TextField(default=None, null=True)
    question_picture = models.BinaryField(default=None, null=True)
    answer = models.CharField(max_length=255)
    mc_a = models.CharField(max_length=255)
    mc_b = models.CharField(max_length=255)
    mc_c = models.CharField(max_length=255)

    class Meta:
        managed = True
        db_table = 'question'

    def __str__(self):
        return self.question

serializers.py

class QuestionSerializer(serializers.ModelSerializer):

    class Meta:
        model = Question
        fields = ('question_id',
                  'question',
                  'question_picture',
                  'answer',
                  'mc_a',
                  'mc_b',
                  'mc_c')

views.py

@api_view(['POST'])
def question_list(request):
    if request.method == 'POST':
            question_data = JSONParser().parse(request)
            questions_serializer = QuestionSerializer(data=question_data)
            if questions_serializer.is_valid():
                questions_serializer.save()
                return JsonResponse(questions_serializer.data, status=status.HTTP_201_CREATED) 
            return JsonResponse(questions_serializer.errors, status=status.HTTP_400_BAD_REQUEST)

With the above code that I tried to run to insert data. When I checked the database, the question_picture data (image) was empty, but the other data was filled.

How do I insert the image so that it can be stored in the database?