Those recipients will receive less bitcoins than you enter in their corresponding amount field.
                                      If no outputs are specified here, the sender pays the fee.
         vout_index,                  (numeric) The zero-based output index, before a change output is added.
         ...
       ],
       "conf_target": n,              (numeric, optional, default=wallet -txconfirmtarget) Confirmation target in blocks
       "estimate_mode": "str",        (string, optional, default=