{
  "_id": {
    "type": "string"
  },
  "m4006": {
    "type": "string"
  },
  "m4008": {
    "type": "string"
  },
  "m4014": {
    "type": "string"
  },
  "m4072": {
    "type": "string"
  },
  "m4400": {
    "type": "datetime"
  }
}