{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "invoice_id": {
      "type": ["null", "string"]
    },
    "suggestion_id": {
      "type": ["null", "integer"]
    },
    "locked": {
      "type": ["null", "boolean"]
    },
    "created_id": {
      "type": ["null", "integer"]
    },
    "hour_rate_in_cents":{
      "type":["null","integer"]
    },
    "deleted":{
      "type":["null","boolean"]
    },
    "to":{
      "type":["null","string"],
      "format":"timestamp"
    },
    "estimated_cost":{
      "type":["null","array"],
      "items":{
        "type":["null", "object"],
        "properties":{
          "amount":{
            "type":["null","number"]
          },
          "formatted":{
            "type":["null","string"]
          },
          "fractional":{
            "type":["null","integer"]
          }
        }
      }
    },
    "billable":{
      "type":["null","boolean"]
    },
    "updater_id":{
      "type":["null","integer"]
    },
    "label_ids":{
      "type":["null","array"]
    },
    "forecast_id":{
      "type":["null","string"]
    },
    "user_ids":{
      "type":["null","array"]
    },
    "timer_stopped_on":{
      "type":["null","integer"]
    },
    "day":{
      "type":["null","string"],
      "format": "date-time"
    },
    "external_id":{
      "type":["null","integer"]
    },
    "cost":{
      "type":["null","array"],
      "items":{
        "type":["null","object"],
        "properties": {
          "amount":{
            "type":["null","number"]
          },
          "formatted":{
            "type":["null","string"]
          },
          "fractional":{
            "type":["null","integer"]
          }
        }
      }
    },
    "billed_at":{
      "type":["null","string"]
    },
    "sequence":{
      "type":["null","integer"]
    },
    "created_at":{
      "type":["null","integer"]
    },
    "project":{
        "type":"object",
        "properties": {
          "required_label_ids":{
            "type":["null","array"]
          },
          "labels":{
            "type":["null","array"]
          },
          "invoice_by_budget":{
            "type":["null","boolean"]
          },
          "budget_percent":{
            "type":["null","number"]
          },
          "name":{
            "type":["null","string"]
          },
          "budget":{
            "type":["null","integer"]
          },
          "hour_rate":{
            "type":["null","string"],
            "airbyte_type":"number"
          },
          "budget_scope":{
            "type":["null","string"]
          },
          "budget_calculation":{
            "type":["null","string"]
          },
          "has_recurrence":{
            "type":["null","boolean"]
          },
          "label_ids":{
            "type":["null","array"]
          },
          "enable_labels":{
            "type":["null","string"]
          },
          "required_labels":{
            "type":["null","boolean"]
          },
          "required_notes":{
            "type":["null","boolean"]
          },
          "client":{
              "type":"object",
              "properties": {
                "external_id":{
                  "type":["null","string"]
                },
                "active":{
                  "type":["null","boolean"]
                },
                "name":{
                  "type":["null","string"]
                },
                "updated_at":{
                  "type":["null","string"],
                  "format": "timestamp"
                },
                "id":{
                  "type":["null","integer"]
                }
              }  
          },
          "account_id":{
            "type":["null","integer"]
          },
          "updated_at":{
            "type":["null","integer"]
          },
          "budget_progress":{
            "type":["null","number"]
          },
          "budget_expired_on":{
            "type":["null","string"]
          },
          "external_id":{
            "type":["null","string"]
          },
          "hour_rate_in_cents":{
            "type":["null","number"]
          },
          "active":{
            "type":["null","boolean"]
          },
          "rate_type":{
            "type":["null","string"]
          },
          "color":{
            "type":["null","string"]
          },
          "budget_type":{
            "type":["null","string"]
          },
          "billable":{
            "type":["null","boolean"]
          },
          "id":{
            "type":["null","integer"]
          }
        }
    },
    "user":{
      "type":["null","array"],
      "items":{
        "type":["null","object"],
        "properties": {
          "name":{
            "type":["null","string"]
          },
          "email":{
            "type":["null","string"]
          },
          "updated_at":{
            "type":["null","string"],
            "format": "timestamp"
          },
          "avatar":{
            "type":["null","array"],
            "items":{
              "type":["null","object"],
              "properties": {
                "medium":{
                  "type":["null","string"]
                },
                "medium_retina":{
                  "type":["null","string"]
                },
                "timeline":{
                  "type":["null","string"]
                },
                "large":{
                  "type":["null","string"]
                },
                "large_retina":{
                  "type":["null","string"]
                }
              }  
            }
          },
            "id":{
              "type":["null","integer"]
            }
          }  
        }
    },
    
    "estimated":{
      "type":["null","string"]
    },
    "timestamps":{
      "type":["null","array"]
    },
    "note":{
      "type":["null","string"]
    },
    "estimated_duration":{
      "type":["null","array"],
      "items":{
        "type":["null","object"],
        "properties": {
          "total_minutes":{
            "type":["null","integer"]
          },
          "total_seconds":{
            "type":["null","integer"]
          },
          "formatted":{
            "type":["null","string"]
          },
          "total_hours":{
            "type":["null","number"]
          },
          "seconds":{
            "type":["null","integer"]
          },
          "minutes":{
            "type":["null","integer"]
          },
          "hours":{
            "type":["null","integer"]
          }
        }
      }
    },
    "draft":{
      "type":["null","boolean"]
    },
    "from":{
      "type":["null","string"],
      "format": "timestamp"
    },
    "uid":{
      "type":["null","string"]
    },
    "timer_state":{
      "type":["null","string"]
    },
    "manage":{
      "type":["null","boolean"]
    },
    "id":{
      "type":["null","integer"]
    },
    "duration":{
      "type":["null","array"],
      "items":{
        "type":["null","object"],
        "properties": {
          "total_minutes":{
            "type":["null","integer"]
          },
          "total_seconds":{
            "type":["null","integer"]
          },
          "formatted":{
            "type":["null","string"]
          },
          "total_hours":{
            "type":["null","number"]
          },
          "correctedHours":{
            "type":["null","integer"]
          },
          "seconds":{
            "type":["null","integer"]
          },
          "minutes":{
            "type":["null","integer"]
          },
          "hours":{
            "type":["null","integer"]
          }
        }
      }
    },
    "billed":{
      "type":["null","boolean"]
    },
    "locked_reason":{
      "type":["null","string"]
    },
    "entry_ids":{
      "type":["null","array"]
    },
    "hour_rate":{
      "type":["null","string"],
      "airbyte_type":"number"
    },
    "updated_from":{
      "type":["null","string"]
    },
    "created_from":{
      "type":["null","string"]
    },
    "timer_started_on":{
      "type":["null","integer"]
    }
  }
}