post https://api.akahu.io/v1/refresh/
If you call this endpoint with a Connection ID, Akahu begins the process of updating all of the user accounts belonging to the given connection.
If you call this endpoint with an Account ID, Akahu begins the process of updating the account and all other accounts with the same credentials. If the user has shared 3 ASB accounts from the same credentials and you refresh the first, the other two accounts will also be refreshed.