Bug : Failing at Webhook Input (JSON)

JSON :

{
  "leads": [
    {
      "name": "Sarah Mitchell",
      "email": "sarah.mitchell@techcorp.io",
      "company": "TechCorp Solutions",
      "message": "We need to onboard 200 users immediately. Budget approved, CTO ready to sign. Can we demo this week?",
      "source": "landing_page"
    },
    {
      "name": "James Patel",
      "email": "j.patel@growthstartup.com",
      "company": "GrowthStartup Inc",
      "message": "Exploring your platform for a few weeks. Interested in pricing for a team of 10. No rush.",
      "source": "blog_post"
    },
    {
      "name": "Alex Jordan",
      "email": "alexj@gmail.com",
      "company": "",
      "message": "Just curious about what this does. Saw an ad somewhere.",
      "source": "paid_ad"
    },
    {
      "name": "Priya Sharma",
      "email": "priya@innovate.co",
      "company": "Innovate Co",
      "message": "We are evaluating tools for our 50 person sales team. Looking to decide by end of quarter.",
      "source": "referral"
    },
    {
      "name": "Tom Brady",
      "email": "tomb@yahoo.com",
      "company": "",
      "message": "What is this?",
      "source": "social_media"
    }
  ]
}

File :