Prepare return request model

{
  "OrderId": -36445997,
  "CustomOrderNumber": "amet",
  "Items": [
    {
      "ProductId": 36684136,
      "ProductName": "reprehenderit",
      "ProductSeName": "qui est mollit ex",
      "AttributeInfo": "Excepteur veniam",
      "UnitPrice": "laborum eiusmod ut Excepteur",
      "Quantity": -98940605,
      "Id": 51297383,
      "CustomProperties": {
        "est67c": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        },
        "dolor9": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    },
    {
      "ProductId": 44538985,
      "ProductName": "cupidatat",
      "ProductSeName": "ea nisi nulla pariatur magna",
      "AttributeInfo": "laborum Duis adipisicing magna incididunt",
      "UnitPrice": "mollit dolore velit occaecat",
      "Quantity": 56404652,
      "Id": -1234431,
      "CustomProperties": {
        "proidentdc": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        },
        "sit_6": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    }
  ],
  "ReturnRequestReasonId": -20372947,
  "AvailableReturnReasons": [
    {
      "Name": "tempor laborum eiusmod occaecat",
      "Id": 65359949,
      "CustomProperties": {
        "ipsumefe": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    },
    {
      "Name": "ut",
      "Id": -19797640,
      "CustomProperties": {
        "sint_562": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    }
  ],
  "ReturnRequestActionId": 20178416,
  "AvailableReturnActions": [
    {
      "Name": "labore nisi aliqua ea dolore",
      "Id": 71258095,
      "CustomProperties": {
        "mollit58": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    },
    {
      "Name": "exercitation nisi ea veniam tempor",
      "Id": 70627468,
      "CustomProperties": {
        "consectetur_7f": {
          "value": "<Error: Too many levels of nesting to fake this schema>"
        }
      }
    }
  ],
  "Comments": "aliquip",
  "AllowFiles": true,
  "UploadedFileGuid": "9c52475d-297b-b12a-49cf-c21ebf07f02a",
  "Result": "Ut culpa do reprehenderit",
  "CustomProperties": {
    "sit_b7": {},
    "enim3": {}
  }
}