Add Sticker To Set Request
Request body for addStickerToSet
Parameters
User identifier of sticker set owner
Sticker set name
PNG image with the sticker, must be up to 512 kilobytes in size, dimensions must not exceed 512px, and either width or height must be exactly 512px. Pass a file_id as a String to send a file that already exists on the Telegram servers, pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data. More info on Sending Files »
TGS animation with the sticker, uploaded using multipart/form-data. See https://core.telegram.org/animated_stickers#technical-requirements for technical requirements
One or more emoji corresponding to the sticker
A JSON-serialized object for position where the mask should be placed on faces