def METHOD_NAME():
    json_data = request.get_json()
    if not json_data:
        return {"message": "No input data provided"}, 400
    # Validate and deserialize input
    try:
        data = quote_schema.load(json_data)
    except ValidationError as err:
        return err.messages, 422
    first, last = data["author"]["first"], data["author"]["last"]
    author = Author.query.filter_by(first=first, last=last).first()
    if author is None:
        # Create a new author
        author = Author(first=first, last=last)
        db.session.add(author)
    # Create new quote
    quote = Quote(
        content=data["content"], author=author, posted_at=datetime.datetime.utcnow()
    )
    db.session.add(quote)
    db.session.commit()
    result = quote_schema.dump(Quote.query.get(quote.id))
    return {"message": "Created new quote.", "quote": result}