har-schema/lib/pageTimings.json

{
  "$id": "pageTimings.json#",
  "$schema": "http://json-schema.org/draft-06/schema#",
  "type": "object",
  "properties": {
    "onContentLoad": {
      "type": "number",
      "min": -1
    },
    "onLoad": {
      "type": "number",
      "min": -1
    },
    "comment": {
      "type": "string"
    }
  }
}