curl -X GET  \
  'https://api.sandbox.shipber.com/v1/open-api/label?custom_order_num=cimy-977885' \
  -H 'Content-Type:application/json' \
  -H 'Api-Key:2cn1wgmfidytin3jef3b' \
  -H 'Api-Secret:qRBYybjRch7BdTxO5NTyGUd6mBvowNbsjahnAnpdI-BXc5sCrRt15XGr-hc9oY7C'

{
    "data": {
        "order_num": "ST1618444800208768",
        "create_at": "2021-04-15T08:47:08.045Z",
        "custom_order_num": "FBAguang-April12992",
        "status": "Printed",
        "shipment": {
            "packages": [{
                "identifier": {
                    "tracking_id_type": "FEDEX",
                    "identification_number": "",
                    "tracking_number": "786002536837",
                    "master_tracking_id_type": "FEDEX",
                    "master_tracking_number": "786002536837"
                },
            }],
            "uuid": "be5ac2f5-10af-455a-beed-5e5ba77d9d65",
            "charge": 10.81,
            "create_at": "2021-04-15T08:47:08.045Z",
            "label_download": {
                "pdf": "https://shipber-label-stage.s3.us-west-2.amazonaws.com/Labels/fedex/fedex_ground/786002536837/786002536837.pdf?AWSAccessKeyId=AKIAVKD5XIH4LVPFTARC&Expires=1618477362&Signature=hvglmkBXlDMcBeidwBd%2FN4kgQbw%3D"
            }
        }
    }
}