curl --request GET \
  --url https://api-sandbox.y.uno/v1/organizations/users/{user_id}/account-group-permissions \
  --header 'PRIVATE-SECRET-KEY: <api-key>' \
  --header 'PUBLIC-API-KEY: <api-key>'

{
  "permissions": [
    {
      "account_group_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "account_group_name": "<string>",
      "role_id": "<string>",
      "role_name": "<string>",
      "accounts_count": 123
    }
  ]
}