How can I submit dynamic form since i don't know my v-models

I have a dynamic form, I render my components ( input component, textarea components...) depends on what i have in my database table, I would like to know how can i submit the form since i don't know the names of my v-models because each user in my application can make a different form.

<template>
    <b-modal id="modal-1" v-model="showModal" title="Add Contact" modal-class="right" content-class="rounded-0" @ok="handleOk" @hidden="resetModal">
        <form ref="form" name="addcontact">
            <render :definition="response"></render>
        </form>
    </b-modal>
</template>

<script>

import render from "../../components/forms/dynamic-render";

export default {
    components:{
        render
    },
    data() {
        return {
           showModal: true,
           response: [
               {type:'text', label: 'My title', is_required:1},
               {type:'textarea', label: 'text zone'}
           ]
        }
    },
    methods:{
        resetModal: function(){
            this.$emit('close');
        },
        handleSubmit: function($e){
            // i want to submit using axios but I don't know how in this case ( dynamic form with different v-model value ) 
        },
        handleOk: function(bvModalEvt){
            
            this.handleSubmit();
        }
    }
};
</script>