Example payload

{
  "account_id": "acct_01japd271aeatb7txrzr2xj8sg",
  "data": {
    "attachments": [
      {
        "id": "att_01jjnn75vgepj8bnnttfw1st5s",
        "type": "image",
        "url": "https://toretto.family/skyline.jpg"
      }
    ],
    "blast_id": null,
    "body": "Dude, I almost had you!",
    "conversation": {
      "contact": {
        "first_name": "Dominic",
        "id": "ctc_01ja88cboqffhswjx8zbak3ykk",
        "last_name": "Toretto",
        "phone_number": "+18015551234"
      },
      "id": "cnv_01jav8xy7fe4nsay3c9deqxge9",
      "phone_number": {
        "campaign_id": "cpn_01jjnn7s0zfx5tdcsxjfy93et2",
        "id": "pn_01jsjwe4d9fx3tpymgtg958d9w",
        "name": "(801) 555-6789",
        "number": "+18015556789",
        "type": "local"
      }
    },
    "id": "msg_01jjnn7s0zfx5tdcsxjfy93et2",
    "metadata": {
      "order_id": "12345"
    },
    "sent_at": "2024-10-21T23:29:41Z"
  },
  "timestamp": "2024-10-21T23:29:41Z",
  "type": "message.sent"
}