curl --request POST \
  --url https://api.truedy.ai/api/public/v1/batch-calls/{batch_call_id}/contacts \
  --header 'Content-Type: application/json' \
  --data '
{
  "storage_key": "<string>",
  "contacts": [
    {
      "phone_number": "<string>",
      "first_name": "<string>",
      "last_name": "<string>",
      "email": "<string>",
      "custom_fields": {}
    }
  ]
}
'

{}