Add User to Group - API

/rest/{version}/groups/{groupId}/addUser/{userId}

Descriptor	Value
HTTP Method	POST
Description	Adds a user to the specified group. To obtain the userId value in the endpoint, run the Get Users - API call first. The user's id value in the response is the userId value that you use in this endpoint. To obtain the groupId value in the endpoint, run the Get Groups - API call first. The group's id value in the response is the groupId value that you use in this endpoint.
Required Permission	Manage Groups
Version Introduced	2.7.6

Parameter	Value	Required	Description
Accept	String	Yes	A value of ‘application/json’ must be provided.

curl -H 'Accept: application/json' -H "Authorization: APIKEY {apiKey}" -X POST https://localhost:8443/threadfix/rest/latest/groups/1/addUser/3

{
    "message": "",
    "success": true,
    "responseCode": -1,
    "object": "Successfully added user to group."
}