How to convert in Clojure a sequence with maps structure (:data), like this:
{:data ({2019-09-20 3.673202} {2018-01-01 4.673202} {2018-01-02 5.673202}) }
into a map of key-value pairs, like this one:
{:data {2019-09-20 3.673202, 2018-01-01 4.673202, 2018-01-02 5.673202}}