{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "common": {
      "type": "object",
      "properties": {
        "assetId": {
          "type": "string"
        },
        "event": {
          "type": "string"
        },
        "ver": {
          "type": "string"
        }
      },
      "required": [
        "assetId",
        "event",
        "ver"
      ]
    },
    "data": {
      "type": "object",
      "properties": {
        "ts": {
          "type": "string"
        },
        "loc": {
          "type": "array",
          "items": [
            {
              "type": "number"
            },
            {
              "type": "number"
            }
          ]
        },
        "dir": {
          "type": "number"
        },
        "spd": {
          "type": "number"
        }
      },
      "required": [
        "ts",
        "loc",
        "dir",
        "spd"
      ]
    }
  },
  "required": [
    "common",
    "data"
  ]
}