curl --request POST \
  --url https://api.zapkey.io/chat/fetchProfilePictureUrl/{instance} \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '
{
  "number": "<string>"
}
'

{
  "wuid": "[email protected]",
  "profilePictureUrl": "https://pps.whatsapp.net/v/t61.2..."
}