curl -i -X GET \
  'https://api.portal.io/public/proposals/123/changeorders/42' \
  -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'

{
  "id": 42,
  "number": 1,
  "name": "Smith Residence AV - Change Order 1",
  "status": "Draft",
  "createdDate": "2026-04-01T10:00:00Z",
  "lastModifiedDate": "2026-04-05T14:30:00Z",
  "lastModifiedByUserDate": "2026-04-05T14:30:00Z",
  "lastSubmittedDate": null,
  "clientLastOpenedDate": null,
  "clientLastDecisionDate": null,
  "lastCompletedDate": null,
  "financialSummary": {
    "partsSubtotal": 800.00,
    "laborTotal": 350.00,
    "feeTotal": 100.00,
    "changeOrderSubtotal": 1250.00,
    "salesTax": {
      "taxStatus": "Ok",
      "total": 103.13
    }
  },
  "areas": [
    {
      "id": 55,
      "name": "Living Room",
      "options": [
        {
          "id": 201,
          "status": "Draft",
          "clientDescription": "Standard Installation Package",
          "items": []
        }
      ]
    }
  ],
  "customer": {
    "id": 101,
    "firstName": "Jane",
    "lastName": "Smith",
    "contactEmail": "jane@example.com",
    "contactPhone": "555-867-5309"
  },
  "dealer": {
    "id": 5,
    "name": "AV Solutions Inc."
  },
  "coverpageImageUrl": null,
  "aboutUs": null,
  "projectDescription": null,
  "profit": null,
  "recurringServices": null,
  "paymentSchedule": null,
  "paymentRequests": [],
  "projectTerms": null,
  "lastModifiedUser": {
    "id": 12,
    "firstName": "Alex",
    "lastName": "Johnson"
  }
}