Custom error message if value is null

[CKanishka]

Hey folks, I have a schema like:
{type:"object", properties: { value: { type: "integer", minimum: 1, maximum: 60, nullable: true, errorMessage: { type: "Invalid type", minimum: "Value must be at least 1", maximum: "Value must be less than or equal to 60", }, }}}

I have set nullable to true to prevent null values from throwing Invalid type error, rather I want to show an error message like value is required or value cannot be null.
Any idea how to achieve this behavior? I have tried my luck with if-else and custom keywords but couldn't make it work. Any help will be highly appreciated 🙏

[CKanishka]

@epoberezkin Sorry tagging you here