curl --request POST \
  --url https://api.buildwithchirp.com/v1/whatsapp/groups/{groupId}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "type": "text",
  "text": {
    "body": "Hello group!"
  },
  "image": {
    "id": "<string>",
    "caption": "<string>"
  },
  "video": {
    "id": "<string>",
    "caption": "<string>"
  },
  "audio": {
    "id": "<string>"
  },
  "document": {
    "id": "<string>",
    "filename": "<string>",
    "caption": "<string>"
  }
}
'

{
  "messageId": "<string>"
}