Get list of provider's specialities

{
    "providers_specialities": [
        {
            "speciality": {
                "id": 1234,
                "title": "بهداشت روان"
            },
            "academic_degree": {
                "id": 1234,
                "title": "کارشناسی ارشد"
            },
            "id": 1234,
            "alias": "فوق تخصص حلق و گوش",
            "achieved_at": {}
        }
    ]
}