Odtnhj

I am trying to create an ad via FB Marketing API, that once the user clicks on the ad, it will open messenger with a pre-defined message (including image). I have managed to create the ad, however I'm struggling to edit the contents of the message.

I have created a campaign, an adset which I use for targeting (includes the messenger as destination), an adcreative and an ad. The payload I’m sending for the adcreative is as follow:

 "name": “name",
 "object_story_spec": 
 "instagram_actor_id": “<instagram_id>",
 "page_id": “<page_id>",
 "link_data": 
 "call_to_action": 
 "type": "MESSAGE_PAGE",
 "value": 
 "app_destination": "MESSENGER"
 
 ,
 "image_hash": “<image_hash>",
 "link": “<link>",
 "message": “<message>",
 "description": “<description>",
 "page_welcome_message": [
 
 "message": 
 "attachment": 
 "type": "template",
 "payload": 
 "template_type": "generic",
 "elements": [
 
 "title": “<title>",
 "image_hash": “<image_hash>",
 "buttons": [
 
 "type": "web_url",
 "url": “<link>",
 "title": "View Website"
 ,
 
 "type": "postback",
 "title": "Start Chatting",
 "payload": "USER_DEFINED_PAYLOAD"
 
 ]
 
 ]
 
 ,
 "quick_replies": [
 
 "content_type": "text",
 "title": "Message 2",
 "payload": "reply2"
 
 ]
 ,
 "user_edit": true
 
 ]
 
 ,
 "access_token": “<access_token>",
 "headline": “<headline>",
 "url_tags": “<tags>",
 "body": “<message_body>"

The ad gets created, there is a button to open messenger but the contents of the message is not right. When I open the ad on Business manager to check the result of the API, it looks like the payload I’ve sent is disregarded. Any ideas?