| user | Chat | Yes | The participant |
| inviter | Chat | Optional | The user that invited this participant |
| promoted_by | Chat | Optional | The user that promoted this participant |
| kicked_by | Chat | Optional | The user that kicked this participant |
| date | int | Yes | When was the user invited |
| role | string | Yes | user, admin, creator, banned |
| via_request | bool | Optional | Whether the user is the current user, and we joined upon specific approval of an admin |
| left | bool | Optional | For banned/kicked users, whether the user has left the group |
| rank | string | Optional | A custom rank string for admins and creators |
| can_edit | Bool | Optional | Can the user edit messages in the channel |
| left | Bool | Optional | Has this user left |
| admin_rights | ChatAdminRights | Optional | Admin rights |
| banned_rights | ChatBannedRights | Optional | Banned rights |