/aggregation/provideraccounts/{provider_account_id}

Update a provider accounts to:

1. Update account credentials when the user has changed the authentication information at the the provider site.
2. Post MFA information for the MFA-enabled provider accounts during add and update accounts.

If the credentials have to be updated, one of the following should be provided:

1. LoginForm
2. Field array

The loginForm or the field array are the objects under the provider object that is obtained from the get provider details service response. The credentials provided by the user should be embedded in the loginForm or field array object. Similar to credentials, the MFA information should be embedded in the loginForm or field array object.