ApprovalSubmitRequest(ApprovalSubmitRequest)

{
    "app_code": "string",
    "business_type": "string",
    "business_key": "string",
    "title": "string",
    "originator_user_id": "",
    "originator_department_id": "",
    "template_code": "",
    "fields": [
        {
            "field_code": "string",
            "field_name": "",
            "field_type": "text",
            "value": "",
            "external_field_id": ""
        }
    ],
    "callback_url": ""
}