raw data.
ID of the member.
client.
Client.
ID of the guild where the member came from.
ID of the member.
List of member's old roles. The value is null if the old roles aren't cached or if no role has been updated.
List of member's roles. The value is null if no role has been updated.
New member's nickname, if updated. The value is null if the new nickname is the same as the username, or if nickname hasn't been updated.
Information about an updated member.