Field Name	Type	Description
paymentAmount	Decimal	The amount for the given line item. This amount will be shown as the total amount for the line item and defaulted as the amount to be paid off on that line item.
editable	Boolean	Default is True. If True, allows for edits to the amount to be made on the page. If False, then the amount provided in paymentAmount will be locked in place.
itemId	String	Value for itemId column. If none supplied for any line item on page, column won't appear.
itemName	String	Value for itemName column. If none supplied for any line item on page, column won't appear.
itemDescription	String	Value for itemDescription column. If none supplied for any line item on page, column won't appear.

"lineItems": [
    {
      "paymentAmount": 600,
      "editable": true,
      "itemId": "12345",
      "itemName": "Hourly Professional Services",
      "itemDescription": "Standard Hourly Rate"
    }
  ]