curl 'https://graph.facebook.com/<API_VERSION>/<WHATSAPP_BUSINESS_PHONE_NUMBER_ID>/messages' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <ACCESS_TOKEN>' \
-d '
\{
  "messaging_product": "whatsapp",
  "recipient_type": "individual",
  "to": "<WHATSAPP_USER_PHONE_NUMBER>",
  "type": "image",
  "image": {
    "id": "&lt;MEDIA_ID&gt;", <!-- Only if using uploaded media -->
    "link": "&lt;MEDIA_URL&gt;", <!-- Only if using hosted media (not recommended) -->
    "caption": "&lt;MEDIA_CAPTION_TEXT&gt;"
  }
}'

curl 'https://graph.facebook.com/v24.0/106540352242922/messages' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer EAAJB...' \
-d '
\{
  "messaging_product": "whatsapp",
  "recipient_type": "individual",
  "to": "+16505551234",
  "type": "image",
  "image": {
    "id" : "1479537139650973",
    "caption": "The best succulent ever?"
  }
}'

\{
  "messaging_product": "whatsapp",
  "contacts": [\
    {\
      "input": "+16505551234",\
      "wa_id": "16505551234"\
    }\
  ],
  "messages": [\
    {\
      "id": "wamid.HBgLMTY0NjcwNDM1OTUVAgARGBI1RjQyNUE3NEYxMzAzMzQ5MkEA"\
    }\
  ]
}