Example from IIIF Docs: https://iiif.io/api/content-state/1.0/#51-a-region-of-a-canvas-in-a-manifest
Modified to use Wellcome manifest:
{
"@context": "http://iiif.io/api/presentation/3/context.json",
"id": "https://example.org/import/1",
"type": "Annotation",
"motivation": ["contentState"],