[
 {
  "doctype": "Time Log Batch", 
  "rate": "500", 
  "time_log_batch_details": [
   {
    "doctype": "Time Log Batch Detail", 
    "parentfield": "time_log_batch_details", 
    "parenttype": "Time Log Batch", 
    "time_log": "_T-Time Log-00001"
   }
  ]
 }
]