### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

I would like to request extending `sns_listener` with an ability to understand `email-json` next to `email` protocol.

### 🧑‍💻 Implementation

1. check if protocol is `email` or `email-json`
2. for email json interpret body/message as json

### Anything else?

_No response_
elif req_action == "UntagResource":
                tags_to_remove = []
                req_tags = {k: v for k, v in req_data.items() if k.startswith("TagKeys.member.")}
                req_tags = req_tags.values()
                for tag in req_tags:
                    tags_to_remove.append(tag[0])
                do_untag_resource(topic_arn, tags_to_remove)
                return make_response(req_action)
            data = self._reset_account_id(data)
            return Request(data=data, headers=headers, method=method)
        return True
    @staticmethod
    def _extract_tags(topic_arn, req_data, is_create_topic_request, sns_backend):
        tags = []
        req_tags = {k: v for k, v in req_data.items() if k.startswith("Tags.member.")}
        existing_tags = sns_backend.sns_tags.get(topic_arn, None)
        
        for i in range(int(len(req_tags.keys()) / 2)):
            key = req_tags["Tags.member." + str(i + 1) + ".Key"][0]
            value = req_tags["Tags.member." + str(i + 1) + ".Value"][0]
            tag = {"Key": key, "Value": value}
            tags.append(tag)
            
            
            if is_create_topic_request and existing_tags is not None and tag not in existing_tags:
                return False
        do_tag_resource(topic_arn, tags)
        return True
    @staticmethod
    def _reset_account_id(data):