接口请求传参body里面是个字符串

接口body里面只传一个字符串的这种该怎么写

export function cancelAapplyInvoice(data) {
    return serviceIGO({
        url: `/oms/invoice/cancelinvoice`,
        method: "post",
        headers:{'Content-type':'text/plain'},
        data:data
    })
}