curl --request PUT \
  --url https://api.box.com/2.0/shield_lists/{shield_list_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'box-version: <box-version>' \
  --data '
{
  "name": "My Shield List",
  "content": {
    "type": "country",
    "country_codes": [
      "US",
      "PL"
    ]
  },
  "description": "A list of things that are shielded"
}
'

{
  "id": "90fb0e17-c332-40ed-b4f9-fa8908fbbb24",
  "type": "shield_list",
  "name": "Shield List Name",
  "enterprise": {
    "id": "1910967",
    "type": "enterprise"
  },
  "created_at": "2025-01-13T15:31:01.896Z",
  "updated_at": "2025-01-13T15:31:01.896Z",
  "content": {
    "type": "country",
    "country_codes": [
      "US",
      "PL"
    ]
  },
  "description": "A list of things that are shielded"
}