update code

app/Entities/Signer.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Entities;
+
+use Illuminate\Database\Eloquent\Model;
+use Prettus\Repository\Contracts\Transformable;
+use Prettus\Repository\Traits\TransformableTrait;
+
+/**
+ * Class Signer.
+ *
+ * @package namespace App\Entities;
+ */
+class Signer extends Model implements Transformable
+{
+    use TransformableTrait;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['id', 'name', 'description'];
+
+    public $timestamps = false;
+
+    public function documents(){
+        return $this->hasMany(Document::class);
+    }
+
+}