– Omarosa Manigault Newman was offered a $15,000-a-month contract from President Donald Trump's campaign to stay silent after being fired from her job as a White House aide by Chief of Staff John Kelly last December, according to a forthcoming book by Manigault Newman and people familiar with the proposal.

But she refused, according to the incendiary new book, "Unhinged: An Insider Account of Trump's White House," which also depicts Trump as unqualified, narcissistic and racist. Excerpts of the book were obtained by the Washington Post.

After she was fired, Manigault Newman wrote, she received a call from Trump campaign adviser Lara Trump, the president's daughter-in-law, offering her a job and the monthly contract in exchange for her silence.

A purported nondisclosure agreement attached to the offer, which was reviewed by the Post, said Manigault Newman could not make any comments about President Trump, Vice President Mike Pence or their families or any comments that could damage the president. It said she would do "diversity outreach," among other things, for the campaign.

Throughout his career as a businessman and politician, Trump has repeatedly used NDAs to quiet critics and accusers, including porn star Stormy Daniels and others who claim they have had sexual relationships with him.

In a statement, White House press secretary Sarah Huckabee Sanders said the book "is riddled with lies and false accusations."

Manigault Newman does not offer evidence for some of her most explosive charges but extensively taped her conversations in the White House.

White House aides have long described Manigault Newman as a problematic employee who tried to stage a wedding photo shoot at the White House, exploded at other aides and left shoes strewn around the West Wing. For months, they accurately feared that she was taping conversations inside the building.