Получение списка организационно-правовых форм

curl --request POST 'https://api.esplc.ru/service/opf' \
--header 'Content-Type: application/json' \
--data-raw '{"key": "a2235ee62f268684fb553db39ff16b6"}'

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => 'https://api.esplc.ru/service/opf',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_POSTFIELDS =>'{ "key": "a2246a732584fb753d6b39ff16b6"}',
  CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
]);

$response = curl_exec($curl);

curl_close($curl);
print_r(json_decode($response,1));

{
    "http_status": 200,
    "http_status_message": "",
    "data": {
        "1": {
            "name": "Физическое лицо",
            "services": {
                "baikal": 1,
                "delline": "0xab91feea04f6d4ad48df42161b6c2e7a"
            }
        },
        "2": {
            "name": "ИП (индивидуальный предприниматель)",
            "services": {
                "baikal": 9,
                "delline": "0xaa9042fea4fa169d4d021c6941f2090f"
            }
        },
        ....
    }
}