Code: 400 Bad Request
Content: {
    "error_code": 7,
    "message": "no_token_given"
}

Code: 401 Unauthorized
Content: {
    "error_code": 8,
    "message": "refresh_token_expired"
}

Code: 401 Unauthorized
Content: {
    "error_code": 3,
    "message": "access_token_expired"
}