ej helps you work with Erlang terms representing JSON
The ej module makes it easier to work with Erlang terms representing JSON in
the format returned by jiffy, mochijson2, or ejson. You can use ej:get/2 to
walk an object and return a particular value, ej:set/3 to update a value within
an object, or ej:delete/2 to remove a value from an object.