my json data i will pass into a api
{
“restaurantId” : “073d9089-e318-4133-9364-671b4c47a874”,
“name” : “Sayaji”,
“address” : “Virani chock”,
“cityId” : “f94d6808-a8e9-45e9-a22d-6f41f6446580”,
“proviceId” : “2cdf1e1f-bc07-4873-893a-6357b09f92a5”,
“countryId” : “2d0450c7-59b8-422b-9aa5-1b3877c63c9c”,
“availabilities”: [
{
“dayName”: “Sunday”,
“isOpen”: 1,
“startTime”: “09:00 AM”,
“endTime”: “09:00 PM”
},
{
“dayName”: “Monday”,
“isOpen”: 2,
“startTime”: “09:00 AM”,
“endTime”: “09:00 PM”
},
{
“dayName”: “Tuesday”,
“isOpen”: 1,
“startTime”: “09:00 AM”,
“endTime”: “09:00 PM”
}
]
}

My View Model

private var updateRestaurantProfile = MutableLiveData()
fun getObserveUpdateRestaurantProfile() = updateRestaurantProfile
fun updateRestaurantProfile(
restaurantId:String,
name: String,
address: String,
cityId: String,
proviceId: String,
countryId: String,
availabilities: ArrayList
) {
val builder = MultipartBody.Builder()
builder.setType(MultipartBody.FORM)

    if (name.isNotEmpty()) {
        builder.addFormDataPart("name", name)
    }

    if (address.isNotEmpty()) {
        builder.addFormDataPart("address", address)
    }

    builder.addFormDataPart("cityId", cityId)
    builder.addFormDataPart("proviceId", proviceId)
    builder.addFormDataPart("countryId", countryId)
    builder.addFormDataPart("restaurantId",restaurantId)

    if (availabilities.isNotEmpty()) {
        for (i in availabilities.indices) {
            builder.addFormDataPart("availabilities", availabilities[i].toString())
        }
    }

    val requestBody = builder.build()

    if (!this::repository.isInitialized) {
        repository = HomeRepository()
    }
    isLoading.value = true
    repository.updateRestaurantProfile(requestBody).observeForever {
        if (it.status == ResponseStatus.SUCCESS) {
            updateRestaurantProfile.value = it.data
        } else {
            errorListener.value = it.status
        }
        isLoading.value = false
    }
}