SGScript data schema for prop.grid rendering?

ENTITY_PROPERTY =
{
    "$type" = "object",
    name = { "$type" = "string" },
    label = { "$type" = "string" },
    type = { "$type" = "string", "$hint" = "type.property.entity", "$options" = ["text","position","angle"] },
    default = { "$type" = "string" },
},
ENTITY =
{
    "$type" = "object",
    name = { "$type" = "string" },
    label = { "$type" = "string" },
    icon = { "$type" = "string", "$hint" = "path.image.icon.entity" },
    properties = { "$type" = "array", "$subtype" = "ENTITY_PROPERTY" },
    render = { "$type" = "array", "$subtype" = "string" },
},