what are the different ways read complex test data from csv into JSON requests

Question

[
  {
    "master": {
      "status": "string",
      // more fields
    },
    "address": [
      {
        "place": "string",
        
      // more fields
      }
    ],
    "product": [
      {
        "price": "string",
        // more fields
      }
    ],
    "payment": [
      {
        "action": "string",
        "currency": "string",
        // more fields
      }
    ],
    "referral": [
      {
        "reference": "string",
        // more fields
      }
    ],
    "customer_maintain": {
      "customer_master": {
        "gender": "string",
        // more fields
      },
      "customer_segment": [
        {
          "name": "string",
          // more fields
        }
      ]
    },
    "identification": [
      {
        "idname": "string",
      // more fields
    }
    ]
  
}
]

So, if my JSON request is this complex and in scenario request I want to read data from a CSV file, what are the different and easy ways to do it?

In the Karate feature file, I want to read data from a CSV and give it as a JSON request for an API.