C# mvc web api. Convert json plain text to cipher text over http

Question

I am developing a mobile backend application which is written in c# mvc web api's. I would like to know the best secure mechanism to transmit json data. Is there any issue with sending data in json format, or should i convert that json to som encrypted format? My actual data will look like this.

{
"id":2130,
"location":"florida"
}

my question is, is there any way to convert this json to some other format which can be decrypted at mobile side say like as folllows

{
"zxs#%df":"dfd5d2f",
"fgfd5f5gdd":"fdgfdg699"
}

or as a plain text like

"dfsdfs^^dfsd^%$$fsdfsd*fs6556df$6"

which can be converted to actual json data

Answer 1

Use HTTPS.

It is unlikely you can create our own protocol with comparable security.

Answer 2

Why don't you use tokenization and pass tokens?

you can refere and check with http://jwt.io/