Get User ID

{
  "rc": 100,
  "rm": "OK",
  "user": [
    {
      "user_id": "65857c9x2bvc2496ca2ba28f",
      "name": "Peter Chan",
      "email": "peter.chan@gmail.com",
      "country_code": "852",
      "mobile": "98765432",
      "gender": "M",
      "address": "Address 123",
      "birthday": {
        "byear": "2000",
        "bmonth": "01",
        "bday": "10"
      },
      "source": "FB",
      "user_tags": [
        {
          "value": "音樂"
        },
        {
          "value": "旅遊"
        },
        {
          "value": "跑步"
        }
      ],
      "status": "IMP",
      "created": "2023-10-19"
    }
  ]
}