Is it possible to print the value of Key from the (key-value)pair of json object in laravel

How to print the 'key' value from the json object in laravel. Find below the json array.

 "pricing": {
"in": {
  "categories": [
    "ccTLD",
    "Geography"
  ],
  "addons": {
    "dns": true,
    "email": true,
    "idprotect": true
  },
  "group": "",
  "register": {
    "1": "704.39"
  },
  "transfer": {
    "1": "704.39"
  },
  "renew": {
    "1": "704.39"
  }
},

Suggest me a solution to display "in" from the above data.

via Chebli Mohamed