[
  {"student_api_base":"http://127.0.0.1:5057/v1","teacher_api_base":"http://127.0.0.1:5058/v1",
   "student_backend_receipt_dir":"/absolute/execution/services/backend-receipts/student-1",
   "teacher_backend_receipt_dir":"/absolute/execution/services/backend-receipts/teacher"},
  {"student_api_base":"http://127.0.0.1:5059/v1","teacher_api_base":"http://127.0.0.1:5058/v1",
   "student_backend_receipt_dir":"/absolute/execution/services/backend-receipts/student-2",
   "teacher_backend_receipt_dir":"/absolute/execution/services/backend-receipts/teacher"}
]