(stringify-keys m)
Recursively transforms all map keys from keywords to strings.
(use 'clojure.walk)
(stringify-keys {:a 1 :b 2})
;=> {"a" 1, "b" 2}
(use 'clojure.walk)
(stringify-keys {:a 1 :b {:c {:d 2}}})
;=> {"a" 1, "b" {"c" {"d" 2}}}