SubscriptionIds aren't updated as an Array when only one value remains after duplicates are removed.

### Expected Behavior

`    
"parSubscriptionIds": {
      "value": [
        "00000000-0000-0000-0000-00000000000a"
      ]
    },
`

### Current Behavior

`    
"parSubscriptionIds": {
      "value": "00000000-0000-0000-0000-00000000000a"
    },
`