Add metadata to Facebook App invite

While sending out an App invite in my app, I am trying to find a way to add metadata to it so I can track internally who sent invites and how successful they were (Facebook only shows data from when the dialog is opened and there is no way to track specific funnels).

my code for sending the invite is:

private void openFacebookAppInvite() {
        AppInviteContent content = new AppInviteContent.Builder()
                .setApplinkUrl(FACEBOOK_APP_LINK_URL)
                .setPreviewImageUrl(INVITE_PREVOEW_IMAGE_URL)
                .build();
        // WANT TO ADD METADATA HERE
        AppInviteDialog.show(this, content);
}