For a long time did not change the diary, leave a word, or add your WeChat? Wondering what you can do I haven't modified the others' diary for a long time. Leave a message for you. I want to add your WeChat. I was wondering how you would respond to my message. I think he should have no malice.

My literal translation 我的直译: 1. 好久没改日记了：(He/She or you?) haven't modified diary in a long time. 2. 留个言：Leave a comment 3. 要不（我）加你微信? : Or, I add your Wechat? 4. （我）好奇你能留做什么评论: I am curious to know what is written in comment. Can you tell me more details about the sentences? Otherwise, I might made errors in translation without a specific situation of the sentences.

well, as a chinese, i don't understand the meaning either

好久没改日记了，要不加你微信？好奇你能留做什么评论. Maybe it's one of the messages that your friend leave? I don't think it's a joke or mockery, maybe it's a greeting or asking for opinions？ 好久没改日记了：He or She or you haven't updated the diary in a long time.(like greeting words, or just state a fact) 要不加你微信？：Can I add your Wechat?（maybe he wants to contact you for further conmunication, also make friend with you ） 好奇你能留做什么评论.：I’m curious that what will you write in comment. （waiting for your comments, maybe your words is interesting to him?）