JSON Patch before/after

1-before.json

{
  "viewer": {
    "name": "Viewer",
    "description": "Read only access to all users",
    "entity_instances": [
      {
        "id": "UUID-A"
      },
      {
        "id": "UUID-B"
      },
      {
        "id": "UUID-C"
      },
      {
        "id": "UUID-D"
      }
    ]
  }
}

2-target.json

{
  "viewer": {
    "name": "Viewer",
    "description": "Read only access to all users",
    "entity_instances": [
      {
        "id": "UUID-B"
      },
      {
        "id": "UUID-C"
      },
      {
        "id": "UUID-D"
      }
    ]
  }
}

3-result.json

[
    {
        "op": "remove",
        "path": "/viewer/entity_instances/3"
    },
    {
        "op": "replace",
        "path": "/viewer/entity_instances/2/id",
        "value": "UUID-D"
    },
    {
        "op": "replace",
        "path": "/viewer/entity_instances/1/id",
        "value": "UUID-C"
    },
    {
        "op": "replace",
        "path": "/viewer/entity_instances/0/id",
        "value": "UUID-B"
    }
]