Trying to add Facebook Get Started button - facebook-graph-api

Question

I am trying to add a Facebook Messenger get started button to a bot I am working on. The API documentation says I need the following code:
{
"get_started":{
"payload":"<GET_STARTED_PAYLOAD>"
}
}
I'm using the Chrome Postman App as I've been trying to mess around with Curl and I don't really like it.
I set up my URL as follows:
https://graph.facebook.com/v2.6/me/thread_settings?access_token=(MY-ACCESS-TOKEN)
I know the access token works because I used it when setting up my bot's greeting and it worked.
Body of the request is as follows:
{
"get_started":{
"payload":"GET_STARTED"
}
}
When I try to send, I get the following error:
{
"error": {
"message": "(#100) The parameter setting_type is required",
"type": "OAuthException",
"code": 100,
"fbtrace_id": "BC+QucQjBck"
}
}
The API documentation doesn't say anything about needing to specify "setting_type", nor does it say what "setting_type" should be. I know that I need "setting_type":"greeting" for setting the greeting message.
Any suggestions?
If it's easier to make sense of what I'm doing, here is a screenshot:
Screenshot of Error

Answer 1

You are using the wrong endpoint.
The Getting Started button is part of Messenger Profile API, so you have to POST to
https://graph.facebook.com/v2.6/me/messenger_profile?access_token=<PAGE_ACCESS_TOKEN>
^^^^^^^^^^^^^^^^^^ not "thread_settings"
https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api#post