curl -i -X GET \
  'https://sandbox.api.portal.io/public/proposals?PageNumber=1&PageSize=25' \
  -H 'Accept: application/json' \
  -H 'X-MSS-API-APPID: YOUR_APP_ID' \
  -H 'X-MSS-API-USERKEY: YOUR_USER_KEY' \
  -H 'X-MSS-CUSTOM-DATE: Mon, 06 Apr 2026 00:22:19 GMT' \
  -H 'X-MSS-SIGNATURE: BASE64_SIGNATURE'

{
  "proposals": [
    {
      "id": 1042,
      "number": 1001,
      "name": "Smith Residence AV",
      "status": "Draft",
      "total": {
        "proposalTotal": 12500.00,
        "currency": {
          "code": "USD",
          "symbol": "$"
        }
      },
      "createdDate": "2026-03-10T14:00:00Z",
      "lastModifiedDate": "2026-04-01T09:30:00Z",
      "customer": {
        "id": 88,
        "firstName": "Jane",
        "lastName": "Smith",
        "companyName": "",
        "contactEmail": "jane.smith@example.com"
      }
    }
  ],
  "proposalCount": 1
}