json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Athlete",
      "description": "Details about a single athlete.",
      "type": "object",
      "properties": {
          "name": {
              "description": "Athlete's name",
              "type": "string",
              "minLength": 1
          },
          "club": {
              "description": "Athlete's club for a given event/competition",
              "type": "string",
              "minLength": 1
          },
          "first_claim": {
              "description": "Athlete's first claim club",
              "type": "string",
              "minLength": 1
          },
          "vest_number": {
              "description": "Athlete's vest number for a given event/competition",
              "type": [
                  "number",
                  "string"
              ],
              "minimum": 0,
              "minLength": 1
          }
      },
      "required": [
          "name"
      ]
  }