How can I store a serialized object inside a database table in Laravel 5?

I am trying to store a serialized object into my database table in Laravel. I want to save it as a LONGBLOB however, Laravel does not support this in blue prints and only allows me to save as a binary() which is the BLOB equivalent.

Inside my migration, it looks like this:

public function up()
{
    Schema::create('platforms', function (Blueprint $table) {
        $table->increments('id');

        $table->integer('user_id');

        $table->string('name');

        $table->binary('classifier');

        $table->integer('steps')
              ->default(10000);

        $table->timestamps();
    });
}

When I try to then save my serialized object to the database like so:

protected function storeClassifier($blob, $ainame) {
    DB::table('platforms')->insert(
        [
            'user_id'       => \Auth::user()->id,
            'name'          => $ainame,
            'classifier'    => $blob
        ]
    );
}

I get this error:

SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'classifier' at row 1

How can I create a LONGBLOB column for classifier inside my migration? The full object serialized looks like this (extremely big).

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