I have been using the REST API to post some sample text (plain text, no special characters) which is 5559 characters long. When I send a request to POST direct_messages/new, I just get a response of Bad Request. My text was sent in the request body for the text parameter and the POST is successful when I reduce the amount of sample text. I wasn’t expecting this as the DM character limit was increased to 10000. Has anyone else experienced this issue?