Subscribe Return URl with paypal Token for billing

{
  "package_type": "subscription",
  "package_id": "psz@bizsubscription",
  "seller_ipn_url": "http://dev.besure.com.au/my-account/subscriptions/ipn.php?mode=checkout&cid=20180101-7BYUJ",
  "gateway": "paypal",
  "contract": {
    "id": "20180101-7BYUJ",
    "title": "Business Member Subscription @ $725.45 yearly",
    "fromdt": "2018-01-01",
    "untildt": "2019-01-01",
    "total_amt": null,
    "balance_amt": null,
    "trialfromdt": "",
    "trialuntildt": "",
    "country_code": "AU"
  },
  "payer": {
    "userid": "32@psn",
    "firstname": "Mahbub",
    "lastname": "Rahman",
    "email": "lover.mahabub@gmail.com",
    "mobile": "undefined",
    "address": "undefined",
    "suburb": "3desads",
    "state": "NSW",
    "postcode": "4424"
  },
  "billing": {
    "cycle": "yearly",
    "fromdt": "2018-01-01",
    "untildt": "2019-01-01",
    "amount_per_cycle": "$725.45",
    "currency": "AUD",
    "amount_once": 0,
    "date-once": "2015-08-20"
  },
  "pay_info": {
    "type": "paypal",
    "paypal_id": "kuddus@gmail.com"
  },
  "custom": [],
  "contract_sysid": "20180101.101113.5a4a0941a879bIjPs",
  "paypal": {
    "TOKEN": "EC-17W71044UJ1934848",
    "TIMESTAMP": "2018-01-01T10:14:40Z",
    "CORRELATIONID": "7719a45ac6cb8",
    "ACK": "Success",
    "VERSION": "86",
    "BUILD": "40680762",
    "agreement_link": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-17W71044UJ1934848",
    "BILLINGAGREEMENTACCEPTEDSTATUS": "1",
    "CHECKOUTSTATUS": "PaymentActionNotInitiated",
    "EMAIL": "kuddus@gmail.com",
    "PAYERID": "CMVBQ4LKSAL6E",
    "PAYERSTATUS": "unverified",
    "BUSINESS": "Mah Rah's Test Store",
    "FIRSTNAME": "Mah",
    "LASTNAME": "Rah",
    "COUNTRYCODE": "US",
    "SHIPTONAME": "Mah Rah's Test Store",
    "SHIPTOSTREET": "1 Main St",
    "SHIPTOCITY": "San Jose",
    "SHIPTOSTATE": "CA",
    "SHIPTOZIP": "95131",
    "SHIPTOCOUNTRYCODE": "US",
    "SHIPTOCOUNTRYNAME": "United States",
    "ADDRESSSTATUS": "Confirmed",
    "CURRENCYCODE": "USD",
    "AMT": "0.00",
    "SHIPPINGAMT": "0.00",
    "HANDLINGAMT": "0.00",
    "TAXAMT": "0.00",
    "INSURANCEAMT": "0.00",
    "SHIPDISCAMT": "0.00",
    "PAYMENTREQUEST_0_CURRENCYCODE": "USD",
    "PAYMENTREQUEST_0_AMT": "0.00",
    "PAYMENTREQUEST_0_SHIPPINGAMT": "0.00",
    "PAYMENTREQUEST_0_HANDLINGAMT": "0.00",
    "PAYMENTREQUEST_0_TAXAMT": "0.00",
    "PAYMENTREQUEST_0_INSURANCEAMT": "0.00",
    "PAYMENTREQUEST_0_SHIPDISCAMT": "0.00",
    "PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED": "false",
    "PAYMENTREQUEST_0_SHIPTONAME": "Mah Rah's Test Store",
    "PAYMENTREQUEST_0_SHIPTOSTREET": "1 Main St",
    "PAYMENTREQUEST_0_SHIPTOCITY": "San Jose",
    "PAYMENTREQUEST_0_SHIPTOSTATE": "CA",
    "PAYMENTREQUEST_0_SHIPTOZIP": "95131",
    "PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE": "US",
    "PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME": "United States",
    "PAYMENTREQUEST_0_ADDRESSSTATUS": "Confirmed",
    "PAYMENTREQUESTINFO_0_ERRORCODE": "0",
    "PROFILEID": null,
    "TRANSACTIONID": null
  },
  "seller_ipn_action": "subscription_activated"
}