[
  {
    "username": "Ember",
    "avatar": "https://emberimg.oss-cn-beijing.aliyuncs.com/avatar/Ember.png"
  },
  {
    "username": "DG sweet",
    "avatar": "https://emberimg.oss-cn-beijing.aliyuncs.com/avatar/DG%20sweet.jpg"
  },
  {
    "username": "pwx",
    "avatar": "https://emberimg.oss-cn-beijing.aliyuncs.com/avatar/pwx.jpg"
  }
]