{
  "components": {
    "callbacks": {
      "MyCallbackEvent": {
        "{$request.query.queryUrl}": {
          "post": {
            "requestBody": {
              "content": {
                "application/json": {
                  "schema": {
                    "$ref": "#/components/schemas/SomeOtherPayload"
                  }
                }
              },
              "description": "Callback payload"
            },
            "responses": {
              "200": {
                "description": "callback successfully processed"
              }
            }
          }
        }
      }
    },
    "schemas": {
      "SomeOtherPayload": {
        "type": "boolean"
      },
      "SomePayload": {
        "type": "object"
      }
    }
  },
  "info": {
    "title": "Callback refd",
    "version": "1.2.3"
  },
  "openapi": "3.1.0",
  "paths": {
    "/other": {
      "post": {
        "callbacks": {
          "myEvent": {
            "$ref": "#/components/callbacks/MyCallbackEvent"
          }
        },
        "parameters": [
          {
            "description": "bla\nbla\nbla\n",
            "in": "query",
            "name": "queryUrl",
            "required": true,
            "schema": {
              "example": "https://example.com",
              "format": "uri",
              "type": "string"
            }
          }
        ],
        "responses": {
          "201": {
            "content": {
              "application/json": {
                "schema": {
                  "type": "object"
                }
              }
            },
            "description": ""
          }
        }
      }
    },
    "/trans": {
      "post": {
        "callbacks": {
          "transactionCallback": {
            "http://notificationServer.com?transactionId={$request.body#/id}&email={$request.body#/email}": {
              "post": {
                "requestBody": {
                  "content": {
                    "application/json": {
                      "schema": {
                        "$ref": "#/components/schemas/SomePayload"
                      }
                    }
                  },
                  "description": "Callback payload"
                },
                "responses": {
                  "200": {
                    "description": "callback successfully processed"
                  }
                }
              }
            }
          }
        },
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "properties": {
                  "email": {
                    "format": "email"
                  },
                  "id": {
                    "type": "string"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "201": {
            "content": {
              "application/json": {
                "schema": {
                  "type": "object"
                }
              }
            },
            "description": "subscription successfully created"
          }
        }
      }
    }
  }
}