curl --request DELETE \
  --url https://api.getlago.com/api/v1/subscriptions/{external_id}/entitlements/{feature_code} \
  --header 'Authorization: Bearer <token>'

{
  "entitlement": {
    "code": "seats",
    "name": "Number of seats",
    "description": "Number of users of the account",
    "privileges": [
      {
        "code": "max",
        "name": "Maximum",
        "value_type": "integer",
        "value": 15,
        "plan_value": 10,
        "override_value": 15
      },
      {
        "code": "max_admins",
        "name": "Max Admins",
        "value_type": "integer",
        "value": 5,
        "plan_value": 5,
        "override_value": null
      },
      {
        "code": "root",
        "name": "Allow root user",
        "value_type": "boolean",
        "value": true,
        "plan_value": true,
        "override_value": null
      },
      {
        "code": "provider",
        "name": "SSO Provider",
        "value_type": "select",
        "value": "okta",
        "plan_value": "google",
        "override_value": "okta",
        "config": {
          "select_options": [
            "google",
            "okta"
          ]
        }
      }
    ]
  }
}