OpenApi / Swagger v3 Question around Using References by Id instead of Object - openapi

Question

I'm trying to determine how I can set up a request in a manner that makes it easier for end users to interact with it:
so given that Pet is defined as such:
#/components/schemas/Pet
Pet:
x-swagger-router-model: io.swagger.petstore.model.Pet
required:
- name
properties:
id:
type: integer
format: int64
example: 10
name:
type: string
example: doggie
category:
$ref: '#/components/schemas/Category'
status:
type: string
description: pet status in the store
enum:
- available
- pending
- sold
type: object
ApiResponse:
properties:
code:
type: integer
format: int32
type:
type: string
message:
type: string
type: object
and Category is defined as:
#/components/schemas/Category
x-swagger-router-model: io.swagger.petstore.model.Category
properties:
id:
type: integer
format: int64
example: 1
name:
type: string
example: Dogs
xml:
name: category
type: object
and the way to add a new object is by using this POST:
paths:
/pet:
post:
tags:
- pet
summary: Add a new pet to the store
description: Add a new pet to the store
operationId: addPet
responses:
'200':
description: Successful operation
content:
application/xml:
schema:
$ref: '#/components/schemas/Pet'
application/json:
schema:
$ref: '#/components/schemas/Pet'
'405':
description: Invalid input
security:
- petstore_auth:
- 'write:pets'
- 'read:pets'
requestBody:
description: Create a new pet in the store
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/Pet'
application/xml:
schema:
$ref: '#/components/schemas/Pet'
application/x-www-form-urlencoded:
schema:
$ref: '#/components/schemas/Pet'
How do i generate a POST with this format:
{
"id": 10,
"name": "doggie",
"category": 1,
"status": "available"
}
instead of this:
{
"id": 10,
"name": "doggie",
"category": {
"id": 1,
"name": "Dogs"
},
"status": "available"
}
I understand that I can set up a different schema for POST by specifying that for this type of request i would use an int for the category, but was hoping there would be a way to maintain the appropriate referencing of the pet.category to the category.
any ideas would be appreciated.
ps note that the reference for this example is directly accessible here