是的，Auth0 JWT令牌可以用于向Django后端发送POST请求。下面是一个使用Django和Auth0 JWT令牌进行身份验证和发送POST请求的示例代码：

首先，确保在Django项目中安装了djangorestframework和python-jose库。

# settings.py

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.SessionAuthentication',
        'path.to.Auth0JSONWebTokenAuthentication',
    ],
}

AUTH0_DOMAIN = 'your-auth0-domain'
AUTH0_API_IDENTIFIER = 'your-auth0-api-identifier'

# auth0_authentication.py

from jose import jwt
from rest_framework.authentication import BaseAuthentication
from rest_framework.exceptions import AuthenticationFailed
from django.conf import settings


class Auth0JSONWebTokenAuthentication(BaseAuthentication):
    def authenticate(self, request):
        token = self.get_token_from_header(request)
        decoded_token = self.decode_token(token)
        user = self.get_user_from_token(decoded_token)
        return (user, None)

    def get_token_from_header(self, request):
        auth_header = request.META.get('HTTP_AUTHORIZATION')
        if not auth_header:
            raise AuthenticationFailed('Authorization header is missing')
        
        parts = auth_header.split()
        if parts[0].lower() != 'bearer':
            raise AuthenticationFailed('Bearer keyword is missing')
        
        if len(parts) == 1:
            raise AuthenticationFailed('Token is missing')
        
        if len(parts) > 2:
            raise AuthenticationFailed('Token contains spaces')
        
        return parts[1]

    def decode_token(self, token):
        try:
            return jwt.decode(
                token,
                settings.AUTH0_API_IDENTIFIER,
                algorithms=['RS256'],
                audience=settings.AUTH0_DOMAIN,
            )
        except jwt.ExpiredSignatureError:
            raise AuthenticationFailed('Token has expired')
        except jwt.JWTClaimsError:
            raise AuthenticationFailed('Token claims are invalid')
        except Exception:
            raise AuthenticationFailed('Token is invalid')

    def get_user_from_token(self, decoded_token):
        # 在这里实现根据用户信息获取用户的逻辑
        # 例如：根据Auth0的sub字段查询或创建相应的用户对象
        # 返回Django User对象或None
        pass

# views.py

from rest_framework.views import APIView
from rest_framework.response import Response
from django.contrib.auth.decorators import permission_required
from django.utils.decorators import method_decorator


class MyView(APIView):
    @method_decorator(permission_required('myapp.change_mymodel'))
    def post(self, request):
        # 执行POST请求的逻辑
        pass

这是一个简单的示例，其中Auth0JSONWebTokenAuthentication类继承自BaseAuthentication，用于从请求头中提取JWT令牌并验证其有效性。然后，您可以在视图函数中使用@permission_required装饰器来限制只有具有特定权限的用户才能执行POST请求。

请根据您的实际需求进行适当的调整和扩展。