curl --request POST \
  --url https://app.fliqr.ai/api/users/{user_id}/send/file \
  --header 'Content-Type: application/json' \
  --header 'X-ACCESS-TOKEN: <api-key>' \
  --data '
{
  "url": "https://...",
  "type": "image",
  "channel": "messenger"
}
'

{
  "success": true
}