{
  "overlay": "1.0.0",
  "info": {
    "title": "Modified Petstore API Overlay",
    "description": "This is an overlay that modifies the original Petstore API",
    "version": "1.1.0"
  },
  "actions": [
    {
      "target": "$.info",
      "update": {
        "title": "Modified Petstore API",
        "version": "1.1.0",
        "description": "This is an overlay that modifies the original Petstore API"
      }
    },
    {
      "target": "$.paths['/pets'].get",
      "update": {
        "summary": "List all pets with overlay",
        "description": "This operation has been enhanced with an overlay"
      }
    },
    {
      "target": "$.paths['/pets/{petId}'].get.parameters[?(@.name=='petId')]",
      "update": {
        "description": "Enhanced pet ID description from overlay",
        "schema": {
          "type": "integer",
          "format": "int64"
        }
      }
    }
  ]
}