#!/bin/bash
s='4141 2019-01-08T14:42:55.000+02:00 JonhSmith LS08EE0I 30
2128 2019-11-02T13:47:34.000+02:00 James Davis RT84SO1 40
10 Minimal acces, 20 Guest, 30 View, 40 Reporter, 50 Owner,'
sed 's/\([[:space:]]\)30$/\1View/' <<< "$s"
IyEvYmluL2Jhc2gKcz0nNDE0MSAyMDE5LTAxLTA4VDE0OjQyOjU1LjAwMCswMjowMCBKb25oU21pdGggTFMwOEVFMEkgMzAKMjEyOCAyMDE5LTExLTAyVDEzOjQ3OjM0LjAwMCswMjowMCBKYW1lcyBEYXZpcyBSVDg0U08xIDQwCjEwIE1pbmltYWwgYWNjZXMsIDIwIEd1ZXN0LCAzMCBWaWV3LCA0MCBSZXBvcnRlciwgNTAgT3duZXIsJwpzZWQgJ3MvXChbWzpzcGFjZTpdXVwpMzAkL1wxVmlldy8nIDw8PCAiJHMi