POST Praise via Yammer API

[Semyon Kovalyov]

I faced with issue when i'm trying to post praise in Yammer group via Yammer rest api.

Headers:
Authorization: Bearer #Token;
yammer-capabilities: external-messaging,external-groups(and i've tried "external-messaging,parsed-body-only2,user-sidebar,external-groups");

Content-Type: application/json

Here is JSON that i'm trying to send

{
    "body": "test body",
	"group_id": #groupId,
	"message_type": "praise",
	"title": "test title",
	"praise": {
		"comment": "test comment",
		"icon": "thumbsup",
		"praised_user_ids": [#PraisedUserId]
	}
}

And that is my response:

{
    "body": [
        "Please include a message"
    ],
    "code": "body_blank"
}

Explain me please what did i do wrong and finally how can i achieve my goal?

[#2]

I'd like to know if this is possible as well.  We are looking at modernizing an app which currently has this capability within SharePoint activity feeds (on-premise).  A way to make this work within Yammer would be helpful.

[#3]

I don't know still it will be useful for you, but I tried with param skip_body_notification as true. It's worked and it 'll skip the body part.

But, even am looking how to add users email id instead of user's yammer id. Every time I can't call one more API to get user-id before I post Praise. 

[#4]

@praveen rengarajan 

Using yammer rest API as mentioned in above conversations , posting praise in Yammer group . The response what I am getting is  500 Internal Server Error.

JSON that i'm trying to send

{
"body": "test body",
"group_id": "12107481088",
"message_type": "praise",
"title": "title",
"praise": {
"comment": "test comment",
"icon": "thumbsup",
"praised_user_ids": [1548606417,120248147968]
},
"skip_body_notifications" : "true"
}

Headers

Authorization: Bearer #Token;
Content-Type: application/json

Can anybody help me out to solve this issue ?