[start_array, start_array, {float, "2.0e7"}, end_array, {float, "2.0e7"}, start_object, {key, "key"}, {float, "2.0e7"}, {key, "another key"}, {float, "2.0e7"}, end_object, {float, "4.2e70"}, end_array, end_json].
[{comments, true}].
