curl --request GET \
  --url https://api.zenskar.com/plans/{plan_id} \
  --header 'organisation: <api-key>' \
  --header 'x-api-key: <api-key>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "status": "draft",
  "schedule": {
    "duration": "<string>",
    "start_offset": "P0D",
    "trigger_type": "time_based"
  },
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "phases": [],
  "plan_version": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "old_plan_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "new_plan_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "parent_plan_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "version_number": 123,
    "diff": {
      "additions": [
        "<unknown>"
      ],
      "deletions": [
        "<unknown>"
      ],
      "updates": [
        "<unknown>"
      ]
    }
  }
}