Rest API add account to target list


Can someone advise the correct syntax for adding an existing prospect to an existing Target List.

I believe that it is covered by the following endpoint, however i cannot get it to work in Postman

For Example if i wanted to add Account ID "59cf07ec-3bad-11e9-9ff5-02d5713723ce" to Target List "34113b18-705c-11e9-a825-06f590b7be66" how would this be done via postman.

Thanks in advance