Change position of avatar by api

I would like to have the possibility to set the position for the avatar while creating a video with the avatar by API (endpoint 'api.jogg.ai/v1/create_video_fr...'). For example, to add "offset": {"x": 0, "y": 0} to change the position of the avatar on the video. Also, it would be great if we could resize the avatar {"scale": 0.7}.