Deserialize `record` into a clojure.lang.PersistentArrayMap. e.g.:

(deserialize-record
 {:record-content [0 8 85 115 101 114 8 110 97 109 101 0 0 0 17 7
                   0 8 84 101 115 116]}) =>
{:_version 0, :_class "User", :name "Test"}