How to create the model from a dynamic api and pass it to Realmlist in kotlin - kotlin

Question

need help. i have a dynmic API key as shown in pic. based on some solutions, i need to use map to handle dynamic. my issue is how to create the model for Realmlist as it is complaining on Map<>. pls help.
already created model for single item:
open class SingleMultipleOptions (
var key :String ?= null,
var option_name:String?= null,
var id:Long?= null,
var item_price:Double?= null ,
var item_name:String?= null
)
and this is for Map<>
#SerializedName("multiple_item_options")
#Expose
val multiple_item_options: Map<String, List<SingleMultipleOptions>>?= null,
my issue
var item_groups: #WriteWith<OOMenuItemGroupListParceler> RealmList<OOMenuItemGroup>? = null,
var item_options: #WriteWith<OOMenuItemOptionListParceler> RealmList<OOMenuItemOption>? =
null,
var multiple_item_options:RealmList<?????????????????>
var hasItemIcon: Boolean = false,
var is_chargeable: Boolean = false,
API response
"item_options": [],
"multiple_item_options": {
"151668": [ //Dynamic key
{
"option_name": "Dipping Sauce",
"option_display_name": null,
"id": "573738",
"item_price": "0",
"item_name": "Aioli Dipping Sauce",
"hide_price": false,
"min_permitted": "1",
"max_permitted": "1"
},
{
"option_name": "Dipping Sauce",
"option_display_name": null,
"id": "573739",
"item_price": "0",
"item_name": "Peri Peri Dipping Sauce",
"hide_price": false,
"min_permitted": "1",
"max_permitted": "1"
},
{
"option_name": "Dipping Sauce",
"option_display_name": null,
"id": "573740",
"item_price": "0",
"item_name": "Tomato Relish Dipping Sauce",
"hide_price": false,
"min_permitted": "1",
"max_permitted": "1"
},
{
"option_name": "Dipping Sauce",
"option_display_name": null,
"id": "573741",
"item_price": "0",
"item_name": "Ranch Dipping Sauce",
"hide_price": false,
"min_permitted": "1",
"max_permitted": "1"
}
],
"151670": [
{
"option_name": "Meat Lovers Opt",
"option_display_name": null,
"id": "573744",
"item_price": "0",
"item_name": "BBQ Base",