SelfBillingInputCreate

{
    "billingNumber": "SB-30-001",
    "currency": null,
    "buyer": {
        "sid": "string"
    },
    "seller": {
        "sid": "string"
    },
    "lineItems": [
        {
            "sid": "05e72abf-09bb-4d91-ab76-2ea47fbc40a2",
            "name": "string",
            "description": "string",
            "touchpointType": null,
            "touchpointQuantity": 0,
            "amount": {
                "amount": 0,
                "currencyCode": "string"
            },
            "billingStartDate": "2019-08-24",
            "billingEndDate": "2019-08-24",
            "createdBy": "string",
            "createdAt": "2019-08-24T14:15:22.123Z",
            "updatedBy": "string",
            "updatedAt": "2019-08-24T14:15:22.123Z",
            "type": {
                "code": "fee",
                "name": "Fee"
            },
            "feeType": {
                "code": "access"
            }
        }
    ],
    "issueDate": "2019-08-24",
    "saleDate": "2019-08-24",
    "type": {
        "code": "standard"
    }
}