[
  {
    "tierID": 2,
    "unlockThreshold": 40
  },
  {
    "tierID": 3,
    "unlockThreshold": 80
  },
  {
    "tierID": 4,
    "unlockThreshold": 90
  },
  {
    "tierID": 5,
    "unlockThreshold": 90
  },
  {
    "tierID": 6,
    "unlockThreshold": 90
  }
]