{
  "type": "object",
  "properties" : {
    "subscribed": { "type": "boolean" },
    "time_estimate": { "type": "integer" },
    "total_time_spent": { "type": "integer" },
    "human_time_estimate": { "type": ["integer", "null"] },
    "human_total_time_spent": { "type": ["integer", "null"] },
    "participants": {
      "type": "array",
      "items": { "$ref": "../public_api/v4/user/basic.json" }
    },
    "assignees": {
      "type": "array",
      "items": { "$ref": "../public_api/v4/user/basic.json" }
    }
  }
}