onBeforeUpdateUserMessage.jsx

  const onBeforeUpdateUserMessage = (text) => {
    updateChannelParams();
    const userMessageParams = new sdk.UserMessageParams();
    var jsonMessageData = {
      type: "VOTING_APP",
      version: 1,
      title: `${text}`,
    };
    var jsonString = JSON.stringify(jsonMessageData);
    userMessageParams.data = jsonString;
    userMessageParams.customType = "VOTING_APP";
    userMessageParams.message = text;
    return userMessageParams;
  };