CreateCustomer mutation with customer group magento2

I am looking for a solution how we can create customer with customer group Id,

I am using the createCustomer mutation.

mutation {
createCustomer(
input: {
  firstname: "ko2"
  lastname: "89ko2"
  email: "[email protected]"
  is_subscribed: true
  customerGroupId: 1
  }
 ) {
   customer {
    id
    firstname
    lastname
    email
   }
 }
}

I am getting below error

“errors”: [
{
“message”: “Field “customerGroupId” is not defined by type CustomerInput.”,

Can anyone help me with this how I can create customer along with the group. Thanks in Advance!