lifecycle/acceptance/testdata/cache_image_metadata.json

{
  "buildpacks": [
    {
      "key": "some-buildpack-id",
      "layers": {
        "some-layer": {
          "cache": true,
          "data": {
            "some-layer-key": "some-layer-value"
          },
          "sha": "some-layer-sha"
        }
      }
    }
  ]
}