pub unsafe fn paychan_keylet(
_account_ptr: *const u8,
_account_len: usize,
_destination_ptr: *const u8,
_destination_len: usize,
_sequence_ptr: *const u8,
_sequence_len: usize,
_out_buff_ptr: *mut u8,
_out_buff_len: usize,
) -> i32