$ sudo apt-get update
$ sudo apt-get install libgsoap8 

libgsoap8 is installed in your system.

Make ensure the libgsoap8 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libgsoap8 *

You will get with libgsoap8 package name, version, architecture and description in a table

libgsoap8 package basic information: