curl https://api2.ecomailapp.cz/lists/42/subscriber/john.doe@example.com \
  -H "key: YOUR_API_KEY" \
  -H "Content-Type: application/json"

$listId = 42;
$email = 'john.doe@example.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api2.ecomailapp.cz/lists/{$listId}/subscriber/{$email}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'key: YOUR_API_KEY',
    'Content-Type: application/json',
]);
$response = curl_exec($ch);
curl_close($ch);

{
  "subscriber": {
    "id": 12345,
    "name": "John",
    "surname": "Doe",
    "email": "john.doe@example.com",
    "company": "Acme Corporation",
    "city": "New York",
    "country": "US",
    "phone": "+1 (555) 123-4567",
    "gender": "male",
    "tags": ["tag1", "tag2"],
    "rating": 4.5,
    "list_id": 42,
    "status": 1,
    "subscribed_at": "2022-01-01T12:00:00.000000Z",
    "custom_fields": { "field1": "Value 1" },
    "groups": { "grp_60ddec46df422": ["a", "b"] }
  }
}

{
  "errors": ["Subscriber with email foo@bar.cz was not found in the list"]
}