docs: def decode_json_body():
      """
      Decode ``bottle.request.body`` to JSON.
  
      Returns:
          obj: Structure decoded by ``json.loads()``.
  
      Raises:
          HTTPError: 400 in case the data was malformed.
      """
      raw_data = request.body.read()
  
      try:
          return json.loads(raw_data)
      except ValueError as e:
          raise HTTPError(400, e.__str__())