How to decode this JSON with ZIO JSON?

Question

With the following JSON, how to decode with ZIO JSON?

{
"substitutions": {
    "BRANCH_NAME": "main",
    "COMMIT_SHA": "e40addb0c8d8180ae3a13a470b6f3c56f2e2f29f",
    "REF_NAME": "main",
    "REPO_NAME": "data-query-service"
  }
}