Use REST API to like or rate a SharePoint List Item

i would like to rate items via rest API. and i would like get user specific ratings. so if the user rated an item with 5 stars i want to see 5 stars somewhere in XML from rest API. By default i receive a XML including RatingCount and AverageRating. (if there is at least one Rating) But how to get my own rating to display in a UI And how to rate if there is no Value to change? I searched for hours, but can t find any real hint. is there even a way to do this via rest? I am using C#.