curl --request POST \
  --url https://messenger-public-api.cogfy.com/conversations/{conversationId}/messages \
  --header 'Content-Type: application/json' \
  --header 'api-key: <api-key>' \
  --data '
{
  "content": "<string>",
  "media": {
    "name": "<string>",
    "mimeType": "<string>",
    "base64": "<string>"
  }
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}