{
  "contract": "releaseproof-version-observation/v1",
  "synthetic": true,
  "provenance": {"kind": "synthetic-fixture", "scenario_id": "version-comparison-v1", "fixture_id": "deployed-observation"},
  "target": {"project_id": "synthetic-releaseproof-project", "deployment_id": "synthetic-releaseproof-deployment"},
  "source_sha": "2222222222222222222222222222222222222222"
}