$this->client = new \GuzzleHttp\Client([
            'base_uri' => 'https://api.carrotquest.io',
            'verify' => false,
            'http_errors' => false,
            'decode_content' => true,
        ]);

$response = $this->client->post('/v1/users/' . $userId . '/props', [
                'form_params' => [
                    'auth_token' => 'API TOKEN',
                    'by_user_id' => true, // Именно булевое true
                    'operations' => json_encode([
                        [
                            'op' => 'update_or_create',
                            'key' => '$name',
                            'value' => $user->getName(),
                        ],
                        [
                            'op' => 'update_or_create',
                            'key' => '$phone',
                            'value' => $user->getPhone(),
                        ],
                        [
                            'op' => 'update_or_create',
                            'key' => '$email',
                            'value' => $user->getEmail(),
                        ],
                        [
                            'op' => 'update_or_create',
                            'key' => '$group',
                            'value' => $user->getGroupName(),
                        ],
                    ]),
                ]
            ]);