Webservices connector -- Multiple entitlement aggregation

We have build the webservices connection with account (Parent) and entitlement aggregation (child). With this config we can read the 1 entitlement assignment. But users’ with multiple entitlements are not coming in the aggregation.

In the response mapping we have tried multiple options:
“ROLENAME”: “ROLENAME” → Response mapping working for 1 entitlement aggregation.
But
“ROLENAME”: "ROLENAME[]/rn" → Response mapping will blank out all the entitlements
or
“ROLENAME”: "ROLENAME[
] → Response mapping will blank out all the entitlements