curl --request POST \
  --url http://localhost:8080/api/v1/conversations/{cuuid}/messages \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '{
  "message": "<string>",
  "attachments": [
    123
  ],
  "private": true,
  "to": [
    "<string>"
  ],
  "cc": [
    "<string>"
  ],
  "bcc": [
    "<string>"
  ],
  "sender_type": "agent"
}'

{
  "status": "success",
  "data": {
    "id": 123,
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "uuid": "<string>",
    "type": "incoming",
    "status": "pending",
    "conversation_id": 123,
    "conversation_uuid": "<string>",
    "content": "<string>",
    "text_content": "<string>",
    "content_type": "html",
    "private": true,
    "sender_id": 123,
    "sender_type": "agent",
    "meta": {
      "to": [
        "<string>"
      ],
      "cc": [
        "<string>"
      ],
      "bcc": [
        "<string>"
      ],
      "from": [
        "<string>"
      ],
      "subject": "<string>"
    },
    "attachments": [
      {}
    ]
  }
}