description: The user is preparing a message; typing, recording, uploading, etc. This update is valid for 6 seconds. If no repeated update received after 6 seconds, it should be considered that the user stopped doing whatever he's been doing.
The user is preparing a message; typing, recording, uploading, etc. This update is valid for 6 seconds. If no repeated update received after 6 seconds, it should be considered that the user stopped doing whatever he's been doing.