Generate JSON from two different JSON objects without coding custom logic

Question

I have a requirement where an event will emit a JSON following a defined schema = JSON-EventA schema. I have a config(config.json) that follows another JSON-EventB schema. Using data from JSON-EventA and Config from config.json, I have to generate a JSON event data which should follow the JSON-EventB schema. Is this possible to write a function GenerateEventData which takes the eventA data and config to generate EventB data ? Without coding the POCO and writing custom logic to convert from one json to another ? I want to be able to update the JSON-EventA schema, config.json without touching the function GenerateEventData, it should be able to generate data in the new JSON-EventB schema as directed by config.json

Illustrating an example that I want -

// I can get an event data and ensure it follows JSON-EventA schema
string eventAData = GetEvent(A);
/*
eventAData = {"Title": "MyTitle", "Address": {"PING": "123"}}
Follows the below schema
EventASchema = {
  "type": "object",
  "properties": {
    "Title": {
      "type": "string"
    },
    "Address": {
       "type": "object",
       "properties": {
         "PIN": {
          "type": "string"
         }
       }
    }
};*/

string config = GetConfig();
// config = {"NewTitle": "Generated ${Title}", "PIN": "000${Address.PIN}", "Country": "US"}

//This is what I want to achieve.
string eventB = GenerateEventData(A, config);
/*
eventB = {"NewTitle": "Generated MyTitle", "PIN": "000123", "Country": "US"}
*/