curl --request PATCH \
  --url https://api.example.com/v1/cases/{case_id}/closure/steps/{step_id}/sub-tasks/{sub_task_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "completed": true,
  "institution_contact_id": "<string>"
}
'

{
  "data": {
    "id": "01K8CS03CJ2T99HRYE78AN7CCC",
    "step_type": "notify_institutions",
    "title": "Notify Financial Institutions",
    "description": "Contact all banks and financial institutions to notify them of the death and freeze accounts.",
    "status": "in_progress",
    "order": 1,
    "depends_on": [],
    "blocked_reason": null,
    "assigned_to": "<string>",
    "due_date": "2023-12-25",
    "completed_date": "2023-12-25",
    "notes": "<string>",
    "sub_tasks": [
      {
        "id": "<string>",
        "title": "Contact Chase Bank",
        "completed": true,
        "institution_contact_id": "<string>"
      }
    ],
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z"
  }
}