我想发送这样的请求正文： 我该如何发送？我将其作为课程发送吗？"email":{"emailto":"foo@bar.com","emailfrom":"foo@bar.com","emailcc":"foo@bar.com","emailbcc":"foo@bar.com","emailsubject":"Subject","emailtag":"Information","emailtextbody":"---","attachments":[] }val formBody = FormBody.Builder().add("email", "Your message").build()val request = Request.Builder().url(url).post(formBody).addHeader("_Tok...