How to describe this POST JSON request body in OpenAPI (Swagger)?

Question

I have a POST request that uses the following JSON request body. How can I describe this request body using OpenAPI (Swagger)?

{
  "testapi":{
    "testapiContext":{
      "messageId":"kkkk8",
      "messageDateTime":"2014-08-17T14:07:30+0530"
    },
    "testapiBody":{
      "cameraServiceRq":{
        "osType":"android",
        "deviceType":"samsung555"
      }
    }
  }
}

So far I tried the following, but I'm stuck at defining the body schema.

swagger: "2.0"
info:
  version: 1.0.0
  title: get camera
  license:
    name: MIT
host: localhost
basePath: /test/service
schemes:
  - http
consumes:
  - application/json
produces:
  - application/json
paths:
  /getCameraParameters:
    post:
      summary: Create new parameters
      operationId: createnew
      consumes:
        - application/json
        - application/xml
      produces:
        - application/json
        - application/xml
      parameters:
        - name: pet
          in: body
          description: The pet JSON you want to post
          schema:  # <--- What do I write here?
            
          required: true
      responses: 
        200: 
          description: "200 response"
          examples: 
            application/json: 
             {
               "status": "Success"
             }

I want to define the input body inline, as a sample for documentation.

Answer 1

I made it work with:

    post:
      consumes:
        - application/json
      produces:
        - application/json
        - text/xml
        - text/html
      parameters:
        - name: body
          in: body
          required: true
          schema:
            # Body schema with atomic property examples
            type: object
            properties:
              testapi:
                type: object
                properties:
                  messageId:
                    type: string
                    example: kkkk8
                  messageDateTime:
                    type: string
                    example: '2014-08-17T14:07:30+0530'
              testapiBody:
                type: object
                properties:
                  cameraServiceRq:
                    type: object
                    properties:
                      osType:
                        type: string
                        example: android
                      deviceType:
                        type: string
                        example: samsung555
            # Alternatively, we can use a schema-level example
            example:
              testapi:
                testapiContext:
                  messageId: kkkk8
                  messageDateTime: '2014-08-17T14:07:30+0530'
                testapiBody:
                  cameraServiceRq:
                    osType: android
                    deviceType: samsung555