List incident impact fields

{
  "data": [
    {
      "attributes": {
        "display_name": "Customer Impact Scope",
        "field_choices": [
          {
            "description": "Affects all customers",
            "display_name": "Critical",
            "value": "critical"
          }
        ],
        "field_type": "dropdown",
        "name": "customer_impact_scope",
        "tag_key": "env"
      },
      "id": "00000000-0000-0000-0000-000000000000",
      "relationships": {
        "created_by_user": {
          "data": {
            "id": "00000000-0000-0000-2345-000000000000",
            "type": "users"
          }
        },
        "incident_type": {
          "data": {
            "id": "00000000-0000-0000-0000-000000000000",
            "type": "incident_types"
          }
        },
        "last_modified_by_user": {
          "data": {
            "id": "00000000-0000-0000-2345-000000000000",
            "type": "users"
          }
        }
      },
      "type": "impact_fields"
    }
  ],
  "included": [
    {
      "type": "users"
    }
  ]
}