portal/app/Classes/Modules/Unity/Services/UpdatesContractEntity.php

<?php

namespace App\Classes\Modules\Unity\Services;

use Config;
use Illuminate\Support\Facades\Http;
use App\Classes\Modules\Unity\Services\GetAccessToken;

class UpdatesContractEntity
{
    private $getAccessToken;

    private $assignEntityEndpoint;

    public function __construct(GetAccessToken $getAccessToken)
    {
        $this->assignEntityEndpoint = Config::get('unity.url').Config::get('unity.endpoint.assign_entity');
        $this->getAccessToken = $getAccessToken;
    }

    public function execute(string $obligation_hash_id, array $entity_hash_id){

        $accessToken=$this->getAccessToken->execute();

        $this->assignEntityEndpoint = str_replace('{hash}',$obligation_hash_id,$this->assignEntityEndpoint);

        $response = Http::withToken($accessToken)->put( $this->assignEntityEndpoint,['contract_entity_id'=>$entity_hash_id])->object();

        return (isset($response->data)) ? $response->data : null;

    }
}