docs: def upload_credit_note_signature(self, credit_note_it, signature_dict):
          """
          Uploads a signature for the credit note
  
          :param signature_dict: the signature
          :type signature_dict: dict
          :param credit_note_it: the credit note id
          :return Response
          """
          return self._create_put_request(
              resource=CREDIT_NOTES,
              billomat_id=credit_note_it,
              send_data=signature_dict,
              command=UPLOAD_SIGNATURE
          )