curl --request POST \
  --url https://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates \
  --header 'Api-Key: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "chainIds": [
    123
  ],
  "networks": [
    "<string>"
  ],
  "contractAddress": "<string>",
  "lastBlockNumber": 123,
  "lastBlockHash": "<string>",
  "page": {
    "page": 123,
    "column": "<string>",
    "before": {},
    "after": {},
    "sort": [
      {
        "column": "<string>"
      }
    ],
    "pageSize": 123,
    "more": true
  }
}
'

import requests

url = "https://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates"

payload = {
    "chainIds": [123],
    "networks": ["<string>"],
    "contractAddress": "<string>",
    "lastBlockNumber": 123,
    "lastBlockHash": "<string>",
    "page": {
        "page": 123,
        "column": "<string>",
        "before": {},
        "after": {},
        "sort": [{ "column": "<string>" }],
        "pageSize": 123,
        "more": True
    }
}
headers = {
    "Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    chainIds: [123],
    networks: ['<string>'],
    contractAddress: '<string>',
    lastBlockNumber: 123,
    lastBlockHash: '<string>',
    page: {
      page: 123,
      column: '<string>',
      before: {},
      after: {},
      sort: [{column: '<string>'}],
      pageSize: 123,
      more: true
    }
  })
};

fetch('https://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates', 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://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates",
  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([
    'chainIds' => [
        123
    ],
    'networks' => [
        '<string>'
    ],
    'contractAddress' => '<string>',
    'lastBlockNumber' => 123,
    'lastBlockHash' => '<string>',
    'page' => [
        'page' => 123,
        'column' => '<string>',
        'before' => [
                
        ],
        'after' => [
                
        ],
        'sort' => [
                [
                                'column' => '<string>'
                ]
        ],
        'pageSize' => 123,
        'more' => true
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Api-Key: <api-key>",
    "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://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates"

	payload := strings.NewReader("{\n  \"chainIds\": [\n    123\n  ],\n  \"networks\": [\n    \"<string>\"\n  ],\n  \"contractAddress\": \"<string>\",\n  \"lastBlockNumber\": 123,\n  \"lastBlockHash\": \"<string>\",\n  \"page\": {\n    \"page\": 123,\n    \"column\": \"<string>\",\n    \"before\": {},\n    \"after\": {},\n    \"sort\": [\n      {\n        \"column\": \"<string>\"\n      }\n    ],\n    \"pageSize\": 123,\n    \"more\": true\n  }\n}")

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

	req.Header.Add("Api-Key", "<api-key>")
	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://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates")
  .header("Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"chainIds\": [\n    123\n  ],\n  \"networks\": [\n    \"<string>\"\n  ],\n  \"contractAddress\": \"<string>\",\n  \"lastBlockNumber\": 123,\n  \"lastBlockHash\": \"<string>\",\n  \"page\": {\n    \"page\": 123,\n    \"column\": \"<string>\",\n    \"before\": {},\n    \"after\": {},\n    \"sort\": [\n      {\n        \"column\": \"<string>\"\n      }\n    ],\n    \"pageSize\": 123,\n    \"more\": true\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox-api.polygon.technology/v1/IndexerGateway/GetBalanceUpdates")

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

request = Net::HTTP::Post.new(url)
request["Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"chainIds\": [\n    123\n  ],\n  \"networks\": [\n    \"<string>\"\n  ],\n  \"contractAddress\": \"<string>\",\n  \"lastBlockNumber\": 123,\n  \"lastBlockHash\": \"<string>\",\n  \"page\": {\n    \"page\": 123,\n    \"column\": \"<string>\",\n    \"before\": {},\n    \"after\": {},\n    \"sort\": [\n      {\n        \"column\": \"<string>\"\n      }\n    ],\n    \"pageSize\": 123,\n    \"more\": true\n  }\n}"

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

{
  "page": {
    "page": 123,
    "column": "<string>",
    "before": {},
    "after": {},
    "sort": [
      {
        "column": "<string>",
        "order": "DESC"
      }
    ],
    "pageSize": 123,
    "more": true
  },
  "balances": [
    {
      "chainId": 123,
      "results": [
        {
          "contractType": "UNKNOWN",
          "contractAddress": "<string>",
          "accountAddress": "<string>",
          "balance": "<string>",
          "balanceUSD": "<string>",
          "priceUSD": "<string>",
          "blockHash": "<string>",
          "blockNumber": 123,
          "chainId": 123,
          "uniqueCollectibles": "<string>",
          "isSummary": true,
          "tokenID": "<string>",
          "priceUpdatedAt": "<string>",
          "contractInfo": {
            "chainId": 123,
            "address": "<string>",
            "source": "<string>",
            "name": "<string>",
            "type": "<string>",
            "symbol": "<string>",
            "logoURI": "<string>",
            "deployed": true,
            "bytecodeHash": "<string>",
            "extensions": {
              "link": "<string>",
              "description": "<string>",
              "categories": [
                "<string>"
              ],
              "bridgeInfo": {},
              "indexingInfo": {
                "useOnChainBalance": true
              },
              "ogImage": "<string>",
              "ogName": "<string>",
              "originChainId": 123,
              "originAddress": "<string>",
              "blacklist": true,
              "verified": true,
              "verifiedBy": "<string>",
              "featured": true,
              "featureIndex": 123
            },
            "contentHash": 123,
            "updatedAt": "<string>",
            "status": "NOT_AVAILABLE",
            "decimals": 123,
            "queuedAt": "<string>"
          },
          "tokenMetadata": {
            "tokenId": "<string>",
            "source": "<string>",
            "name": "<string>",
            "attributes": [
              {}
            ],
            "status": "NOT_AVAILABLE",
            "chainId": 123,
            "contractAddress": "<string>",
            "description": "<string>",
            "image": "<string>",
            "video": "<string>",
            "audio": "<string>",
            "properties": {},
            "imageData": "<string>",
            "externalUrl": "<string>",
            "backgroundColor": "<string>",
            "animationUrl": "<string>",
            "decimals": 123,
            "updatedAt": "<string>",
            "assets": [
              {
                "id": 123,
                "collectionId": 123,
                "metadataField": "<string>",
                "tokenId": "<string>",
                "url": "<string>",
                "filename": "<string>",
                "filesize": 123,
                "mimeType": "<string>",
                "width": 123,
                "height": 123,
                "updatedAt": "<string>"
              }
            ],
            "queuedAt": "<string>",
            "lastFetched": "<string>"
          }
        }
      ],
      "errorReason": "<string>"
    }
  ]
}

{
  "error": "WebrpcEndpoint",
  "code": 0,
  "msg": "endpoint error",
  "status": 400,
  "cause": "<string>"
}

{
  "error": "WebrpcBadResponse",
  "code": -5,
  "msg": "bad response",
  "status": 500,
  "cause": "<string>"
}