| name | data type | description | 
|---|---|---|
| HeartbeatInterval | Duration | 
Example
{
  "HeartbeatInterval" : {
    "sign" : 12345,
    "seconds" : 12345,
    "months" : 12345,
    "years" : 12345,
    "days" : 12345,
    "XMLSchemaType" : "...",
    "hours" : 12345,
    "minutes" : 12345
  }
}