Write data back to Account

Hi,
I'd like to create a Custom Platform to manage Service Principals in Azure.
In Azure, using POST or PATCH to set passwordCredential is not supported. I am able to create a new secret using HTTP Custom Platform but I also need to write back the secret/hint from the addPassword response to the Account stored on SPP, at minimum change the password to the received secret_text. Being able to write the received hint into the Description field of the Account is nice to have, but it will greatly help the identification of the secret stored in SPP.
Thanks!
Viktor