Manager Scooter Braun has lavished praise upon his client Justin Bieber.

The music man has a long affiliation with the Canadian and he has been a constant source of support for the 19-year-old, who has endured some embattled times recently.

In a new post on Instagram, Braun took time out to praise Bieber's mentality and seemingly defended his star in light of the naysayers.

He said that the singer's heart is "pure" and that he just wants to exude positivity. Braun said:

"Very happy tonight. I love this kid. And I have his back forever. @justinbieberis #family and I am proud of him. He is growing and pushing himself as a young man and doing it with the world watching. And what he wants is to be good. To be great. And to mean something positive to the world despite the obstacles or the pressures."

He continued: "His heart is pure and I will be right there with him like I promised him 6 years ago. It is all love :) How we react to adversity is what defines us as men. proud of u jb. Great talk. Thank u. Love u man! (sic)."

Braun's words came off the back of a Bieber show in Denver last night (June 30), which the singer said on Twitter was one of the best concerts of his Believe tour to date. Watch Justin Bieber perform live below: