React Application is encoding or decoding string and making it unconsumable

This is my original string that I am getting from Query Params using URLSearchParams 7Gqd+TkrOsJr/rU4Kcyl0RO6LYa9yeO4A7nx8mpFOdj2AqFzu84DoQuYzDFGZRwesCu7/PWVNSyxIQwJbktD7tcVkYic508wZC9ifHRjH8poFxRw8wbNquOsFlUcvYZXjYM1irVw0WOTPf8=

When I access it and store it in the Redux store, it is encoded to -> 7Gqd TkrOsJr/rU4Kcyl0RO6LYa9yeO4A7nx8mpFOdj2AqFzu84DoQuYzDFGZRwesCu7/PWVNSyxIQwJbktD7tcVkYic508wZC9ifHRjH8poFxRw8wbNquOsFlUcvYZXjYM1irVw0WOTPf8= (The space after the first 4 characters instead of (+)).

How do I avoid this behavior or how do I ensure the original version is stored in the string. I have tried various URIEncoding/Decodings. But doesn’t seem to bring back to the exact string.