curl --request POST \
  --url https://api.example.com/EXPERIMENTAL_changes \
  --header 'Content-Type: application/json' \
  --data '
{
  "method": "EXPERIMENTAL_changes",
  "params": {
    "block_id": 1,
    "account_ids": [
      "<string>"
    ],
    "changes_type": "account_changes"
  },
  "id": "dontcare",
  "jsonrpc": "2.0"
}
'

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    method: 'EXPERIMENTAL_changes',
    params: {block_id: 1, account_ids: ['<string>'], changes_type: 'account_changes'},
    id: 'dontcare',
    jsonrpc: '2.0'
  })
};

fetch('https://api.example.com/EXPERIMENTAL_changes', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.example.com/EXPERIMENTAL_changes"

payload = {
    "method": "EXPERIMENTAL_changes",
    "params": {
        "block_id": 1,
        "account_ids": ["<string>"],
        "changes_type": "account_changes"
    },
    "id": "dontcare",
    "jsonrpc": "2.0"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

{
  "result": {
    "block_hash": "<string>",
    "changes": [
      {
        "change": {
          "account_id": "<string>",
          "amount": "<string>",
          "code_hash": "<string>",
          "locked": "<string>",
          "storage_usage": 1,
          "global_contract_account_id": "<string>",
          "global_contract_hash": "<string>",
          "storage_paid_at": 0
        },
        "type": "account_update",
        "cause": {
          "type": "not_writable_to_disk"
        }
      }
    ]
  },
  "id": "<string>",
  "jsonrpc": "<string>"
}