The identifier of the chat.
New content of the message. Must be one of the following types: inputMessageText, inputMessageAnimation, inputMessageAudio, inputMessageDocument, inputMessagePhoto, inputMessageRichMessage, inputMessageSticker, inputMessageVideo, inputMessageVideoNote, inputMessageVoiceNote.
The identifier of the welcome message.
Edits a welcome message of a chat; requires can_send_welcome_messages administrator right in the chat. Request type for Tdjson#editChatWelcomeMessage.