Hi @Rashpal Singh 

If you not willing to use any forge component then use this way

Get response from API as Text/Plain instead of JSON structure

Currently the JSON will be stored inside the text variable.

Then use built in replace function to remove all { and } in JSON

Then use string split by using comma(,) as delimeter,

it will give list of values like

[0] => key1 = value1

[1] => key2 = value2

Create one structure like this

Structure name - JSON Data

Attribute 1 = key

Attribute 2 = value

Create one local variable as JSON Data list as data type

Then use for each loop which takes string split's output list as input

Then again use string split function inside for loop to split using Colon(:) delimeter for each record

Then use list append to add those data in the local variable we have created. key =Stringsplit.list[0].text.value and value= Stringsplit.list[1].text.value .

But I suggest to use some other forge component for optimised solution

Regards

Murali