graphQL突变参数中的泛型对象

input GenericObjectInput {
  key: String!
  value: String!
}

mutation UpdateSomething($input: GenericObjectInput!) {
  updateSomething(input: $input) {
    id
    field1
    field2
  }
}

{
  "input": {
    "key": "someKey",
    "value": "someValue"
  }
}