curl --request POST \
  --url https://converso-whatsapp-api.p.rapidapi.com/chat/updateMessage/{instance} \
  --header 'Content-Type: application/json' \
  --header 'instanceCode: <api-key>' \
  --header 'x-rapidapi-key: <api-key>' \
  --data '
{
  "number": 123,
  "text": "<string>",
  "key": {
    "remoteJid": "<string>",
    "fromMe": true,
    "id": "<string>"
  }
}
'

This response has no body data.