curl --request DELETE \
  --url https://{appid}.api-{region}.cometchat.io/v3/users/{uid}/friends \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '
{
  "friends": [
    "<string>"
  ]
}
'

{
  "data": {
    "success": true,
    "message": "Deleted the friend relations succussfully"
  }
}