curl -X POST https://api.paybridgenp.com/v1/billing/subscriptions/sub_01j9x2k3m4n5p6q7r8s9t0u1v2/change-plan \
  -H "Authorization: Bearer sk_test_your_key" \
  -H "Content-Type: application/json" \
  -d '{ "newPlanId": "bpl_01newplanid" }'

import requests

url = "https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan"

payload = {
    "newPlanId": "bpl_01newplanid",
    "planId": "<string>",
    "prorationBehavior": "none"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({newPlanId: 'bpl_01newplanid', planId: '<string>', prorationBehavior: 'none'})
};

fetch('https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'newPlanId' => 'bpl_01newplanid',
    'planId' => '<string>',
    'prorationBehavior' => 'none'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan"

	payload := strings.NewReader("{\n  \"newPlanId\": \"bpl_01newplanid\",\n  \"planId\": \"<string>\",\n  \"prorationBehavior\": \"none\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"newPlanId\": \"bpl_01newplanid\",\n  \"planId\": \"<string>\",\n  \"prorationBehavior\": \"none\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.paybridgenp.com/v1/billing/subscriptions/{id}/change-plan")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"newPlanId\": \"bpl_01newplanid\",\n  \"planId\": \"<string>\",\n  \"prorationBehavior\": \"none\"\n}"

response = http.request(request)
puts response.read_body

{
  "subscription": {
    "id": "sub_01j9x2k3m4n5p6q7r8s9t0u1v2",
    "object": "subscription",
    "customer_id": "bcu_01j9x2k3m4n5p6q7r8s9t0u1v2",
    "plan_id": "bpl_01j9x2k3m4n5p6q7r8s9t0u1v2",
    "start_date": "2023-11-07T05:31:56Z",
    "current_period_start": "2023-11-07T05:31:56Z",
    "current_period_end": "2023-11-07T05:31:56Z",
    "next_invoice_at": "2023-11-07T05:31:56Z",
    "cancel_at_period_end": true,
    "canceled_at": "2023-11-07T05:31:56Z",
    "paused_at": "2023-11-07T05:31:56Z",
    "ended_at": "2023-11-07T05:31:56Z",
    "trial_ends_at": "2023-11-07T05:31:56Z",
    "pause_reason": "<string>",
    "cancel_reason": "<string>",
    "cancel_effective_at": "2023-11-07T05:31:56Z",
    "billing_anchor_day": 123,
    "due_days_after_period_start": 123,
    "reference_id": "<string>",
    "quantity": 1,
    "customer": {
      "id": "<string>",
      "name": "<string>",
      "email": "<string>",
      "phone": "<string>",
      "external_customer_id": "<string>"
    },
    "plan": {
      "id": "<string>",
      "name": "<string>",
      "amount": 123,
      "currency": "<string>",
      "interval_unit": "<string>",
      "interval_count": 123,
      "grace_period_days": 123
    },
    "pending_plan": {
      "id": "<string>",
      "name": "<string>",
      "amount": 123,
      "currency": "<string>",
      "interval_unit": "<string>",
      "interval_count": 123
    },
    "latest_invoice": {
      "id": "<string>",
      "number": "<string>",
      "status": "<string>",
      "amount_due": 123,
      "amount_paid": 123,
      "currency": "<string>",
      "due_at": "2023-11-07T05:31:56Z",
      "paid_at": "2023-11-07T05:31:56Z",
      "issued_at": "2023-11-07T05:31:56Z"
    },
    "metadata": {},
    "livemode": true
  },
  "next_plan": {
    "id": "<string>",
    "name": "<string>",
    "amount": 123,
    "currency": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "request_id": "req_2Je91NlWKuXkdXUJOK9gaHNW",
    "suspension": {
      "suspended_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    },
    "pause": {
      "paused_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    }
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "request_id": "req_2Je91NlWKuXkdXUJOK9gaHNW",
    "suspension": {
      "suspended_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    },
    "pause": {
      "paused_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    }
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "request_id": "req_2Je91NlWKuXkdXUJOK9gaHNW",
    "suspension": {
      "suspended_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    },
    "pause": {
      "paused_at": "2023-11-07T05:31:56Z",
      "reason": "<string>"
    }
  }
}