curl --request POST \
  --url https://coreapi-dev.us.bcpapers.ca/v2/policies/assignments/validate \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "device_ids": [
    "<string>"
  ],
  "group_ids": [
    "<string>"
  ],
  "policy_id": "<string>"
}
'

{
  "conflicts": [
    {
      "item_type": "<string>",
      "policy_id_1": "<string>",
      "policy_id_2": "<string>"
    }
  ],
  "ineligible_device_ids": [
    "<string>"
  ],
  "valid": true
}