How to add two maps of key to values(array) together in Presto? - presto

Question

I have this presto query that gives me this.
but what I am looking for is this.
{"accountnumber":"A00000065","invoice":{"ids":["2c92c09a693316310169384472126a0d"], "numbers":["INV00000270"]}}
I have tried using the map_concat to no luck.
[![enter image description here][2]][2]
https://prestodb.io/docs/current/functions/map.html
[2]: https://i.stack.imgur.com/pq5iu.png
UPDATE: If I do the following it works.
map_concat(multimap_agg('number', invoice.invoicenumber), multimap_agg('id', invoice.id))
but if I change to
map_concat(multimap_agg('number', invoice.invoicenumber), multimap_agg('id', invoice.balance))
I get this error
line 1:23: Unexpected parameters (map(varchar(6),array(varchar)), map(varchar(2),array(decimal(18,6)))) for function map_concat. Expected: map_concat(map(K,V)) K, V

Answer 1

It should go in a comment, but that's too long.
If it doesn't work, I'll delete the answer.
try this:
SELECT map_concat(multimap_agg('ids', invoice.id), multimap_agg('numbers', invoice.invoicenumber))
FROM ...