I am new in integration. Please find the below JSON sample request.I need to create JSON like this and send request to external system and need to save the reponse from external system.Pleae Help.
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 REQUEST DATA
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{
  "userCredentials": {
    "userId": "Sample USer",
    "userPassword": "PAssword",
    "source": "MOBILE",
    "sourceId": "358156078472543",
    "initiatedBy": "ADMIN",
    "deviceName": "SM-J200G",
    "deviceVersion": "22",
    "sourceVersion": "6.0.0.1",
    "latitude": "28.61929",
    "longitude": "77.3784",
    "address": "A-118, A Block"
  },
  "stageLeadDetails": {
    "txnType": "LEAD",
    "loanType": "NEW",
    "loanSubType": "NOR_NA",
    "operationType": "LEAD",
    "monthlyIncome": 25000,
    "obligation": 0,
    "dafaultEmi": 0,
    "dafaultLoanAmount": 50000,
    "dafaultFoir": 0,
    "mobileAppVersion": "6.0.0.1",
    "salesId": "MADMIN911",
    "salesSequenceNo": 911,
    "loanPurpose": "HL",
    "loanPurposeDesc": "Home Loan",
    "lifeInsurance": "Y",
    "loanProductsInsurance": "Y",
    "propertyInsurance": "Y",
    "leadFinalScore": 0,
    "mobileDealId": 911,
    "imeiNumber": "860998036081713",
    "amountRequired": 50000,
    "finalRate": 15,
    "longitude": "28.6192979",
    "latitude": "77.3784688",
    "locationAddress": "A-118, A Block, Sector 63, Noida, Uttar Pradesh 201307, India Noida Uttar Pradesh India 201307 A-118",
    "tenure": 120,
    "product": "HC",
    "productDesc": "HOME CONSTRUCTION LOAN",
    "scheme": 6,
    "schemeDesc": "HOME CONSTRUCTION DOCUMENTED INCOME",
    "rateType": "E",
    "branchId": "7",
    "leadGenerationCity": "UDAIPUR",
    "apf_napf": "",
    "iir": 3.23,
    "foir": 3.23,
    "emi": 807,
    "nearestBranch": 1,
    "leadMakerId": "ADMIN",
    "leadGenerationDate": "2018-10-16",
    "leadMakerDate": "2018-10-16",
    "leadGeneratedRm": "ADMIN",
    "dealSourceType": "ADVERTISE",
    "dealSourceName": "HGCH",
    "makerDate": "2018-10-16",
    "propertyCurrentStatus": "",
    "householdMonthlyIncome": 0,
    "customerRoleList": [
      {
        "salesId": "MADMIN911",
        "customerRole": "PRAPPL",
        "makerDate": "2018-10-16",
        "customerDtl": {
          "salesCustomerId": "3",
          "salesId": "MADMIN911",
          "existingCustomerId": 0,
          "customerExistingType": "N",
          "salutation": "DR",
          "cibilId": "",
          "lastBureau": "NA",
          "photoStream": "",
          "customerConstitution": "SEASDINCO",
          "customerConstitutionDesc": "SELF EMPLOYED ASSESSED INCOME",
          "residentialStatus": "RESIDENT",
          "castCategory": "ST",
          "castCategoryDesc": "SCHEDULE TRIBE(ST)",
          "firstName": "ABHI",
          "middleName": "",
          "lastName": "SINGH",
          "gender": "MALE",
          "genderDesc": "MALE",
          "emailId": "",
          "alternateEmailId": "",
          "customerDOB": "1978-01-07",
          "customerCategory": "GOLD",
          "customerCategoryDesc": "GOLD",
          "maritalStatus": "S",
          "maritalStatusDesc": "SINGLE",
          "community": "",
          "husbandName": "",
          "naregaNo": "",
          "educationDetail": "PRO",
          "educationDetailDesc": "PROFESSIONAL",
          "isMobileVerified": "N",
          "isEmailVerified": "N",
          "isPanVerified": "",
          "pan": "BODPM4246E",
          "drivingLicense": "",
          "voterId": "",
          "passportNumber": "",
          "aadharNumber": "",
          "customerType": "I",
          "turnover": 0,
          "monthlyIncome": 25000,
          "fatherHusbandName": "FATHER",
          "motherName": "MOTHER",
          "guaranteeAmount": 0,
          "numberOfDependent": 0,
          "makerDate": "2018-10-16",
          "stageAddressDtlList": [
            {
              "salesId": "MADMIN911",
              "bpType": "CS",
              "addressType": "REI",
              "addressTypeDesc": "CURRENT RESIDENCE",
              "addressLine1": "ADDRESS",
              "addressLine2": "",
              "addressLine3": "",
              "pincode": "110011",
              "tehsil": 32574,
              "tehsilDesc": "Udyog Bhawan S.O",
              "district": 122,
              "districtDesc": "CENTRAL DELHI",
              "state": 10,
              "stateDesc": "DELHI",
              "country": 1,
              "countryDesc": "INDIA",
              "stayingTogether": "",
              "addressDetail": "REL",
              "monthlyRent": 0,
              "stdCode": "",
              "phoneNo": "",
              "mobileNo": "8802738748",
              "communicationAddress": "Y",
              "landmark": "LANDMARK",
              "areaName": "",
              "noOfRooms": 0,
              "periodStay": 0,
              "noOfYears": 5,
              "noOfMonths": 0,
              "plotNo": "",
              "floorNo": "",
              "makerDate": "2018-10-16"
            }
          ],
          
        }
      }
    ],
   
    "deviceName": "SM-J200G",
    "deviceVersion": "22"
  },
  "leadSubmissionType": "LEAD"
}
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 RESPONSE DATA 
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{"operationStatus":"1","operationMessage":"Operation Completed Successfully. ","salesLeadId":"19761","applicationForm":null,"loanPurposeMakerDate":"2019-01-07 16:40:50"}