config/services.yaml

parameters:

services:
  _defaults:
    autowire: true
    autoconfigure: true

  App\:
    resource: '../src/'
    exclude:
      - '../src/DependencyInjection/'
      - '../src/Entity/'
      - '../src/Kernel.php'

  App\State\ActivateAccount:
    bind:
      $decorated: '@api_platform.doctrine.orm.state.persist_processor'

src/State/ActivateAccount.php

<?php
 
namespace App\State;
 
use ApiPlatform\Metadata\Operation;
use ApiPlatform\State\ProcessorInterface;
use App\Entity\Account;
use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;
 
class ActivateAccount implements ProcessorInterface
{
    private ProcessorInterface $decorated;
    private EntityManagerInterface $manager;
 
    public function __construct(
        ProcessorInterface $decorated,
        EntityManagerInterface $manager
    ) {
        $this->decorated = $decorated;
        $this->manager = $manager;
    }
 
    public function process(
        mixed $data,
        Operation $operation,
        array $uriVariables = [],
        array $context = []
    ) {
        if (!$data->isActive()) {
            $account = new Account();
            $account->setEmail($data->getEmail());
            $account->setPassword($data->getPassword());
            $user = new User();
            $user->setAccount($account);
            $user->setName("");
            $user->setLastname("");
            $this->manager->persist($account);
            $this->manager->persist($user);
            $this->manager->flush();
            $data->setActive(true);
        }
        return $this->decorated->process(
            $data,
            $operation,
            $uriVariables,
            $context
        );
    }
}