{{Store Base URL}}/rest/async/bulk/V1/categories/

[{
    "category": {
        "name": "Nova Bulk Category 1",
        "is_active": true,
        "position": 1,
        "level": 1
    }

},
{
    "category": {
        "name": "Nova Bulk Category 2",
        "is_active": true,
        "position": 1,
        "level": 1
    }

}]