docs: async def build_attrib_request(submitter_did: str,
                                 target_did: str,
                                 xhash: Optional[str],
                                 raw: Optional[str],
                                 enc: Optional[str]) -> str:
      """
      Builds an ATTRIB request. Request to add attribute to a NYM record.
  
      :param submitter_did: DID of the submitter stored in secured Wallet.
      :param target_did: Target DID as base58-encoded string for 16 or 32 bit DID value.
      :param xhash: (Optional) Hash of attribute data.
      :param raw: (Optional) Json, where key is attribute name and value is attribute value.
      :param enc: (Optional) Encrypted value attribute data.
      :return: Request result as json.
      """
  
      logger = logging.getLogger(__name__)
      logger.debug("build_attrib_request: >>> submitter_did: %r, target_did: %r, hash: %r, raw: %r, enc: %r",
                   submitter_did,
                   target_did,
                   xhash,
                   raw,
                   enc)
  
      if not hasattr(build_attrib_request, "cb"):
          logger.debug("build_attrib_request: Creating callback")
          build_attrib_request.cb = create_cb(CFUNCTYPE(None, c_int32, c_int32, c_char_p))
  
      c_submitter_did = c_char_p(submitter_did.encode('utf-8'))
      c_target_did = c_char_p(target_did.encode('utf-8'))
      c_hash = c_char_p(xhash.encode('utf-8')) if xhash is not None else None
      c_raw = c_char_p(raw.encode('utf-8')) if raw is not None else None
      c_enc = c_char_p(enc.encode('utf-8')) if enc is not None else None
  
      request_json = await do_call('indy_build_attrib_request',
                                   c_submitter_did,
                                   c_target_did,
                                   c_hash,
                                   c_raw,
                                   c_enc,
                                   build_attrib_request.cb)
  
      res = request_json.decode()
      logger.debug("build_attrib_request: <<< res: %r", res)
      return res