Did you created this API? If it gives encoded results I think what you can do is decode it with a API or JavaScript inside Adalo. Is it possible to share this API to test it on our end too?
Hello, @dilon_perera
In the opposite case, when I send information from adalo to store in the API database, the API receives this decoded data, in this case the api works in UTF-8 but the characters  à Á Á, all of them the api receive as “?”
I already tried using Integromat to convert but I didn’t get positive results.
but answering your questions
yes, the api is mine and we can create a staging area