curl --request GET \
  --url https://api.bolna.ai/batches/{batch_id} \
  --header 'Authorization: Bearer <token>'

{
  "batch_id": "3c90c3cc0d444b5088888dd25736052a",
  "humanized_created_at": "5 minutes ago",
  "created_at": "2024-01-23T05:14:37Z",
  "updated_at": "2024-02-29T04:22:89Z",
  "status": "scheduled",
  "scheduled_at": "2024-01-29T08:30:00Z",
  "from_phone_number": "+19876543007",
  "file_name": "customers.csv",
  "valid_contacts": 7,
  "total_contacts": 11,
  "execution_status": {
    "completed": 1,
    "ringing": 10,
    "in-progress": 15
  }
}