Orchestrator API request for authenticating

I was trying to use authenticate Orchestrator by making a POST request
https://platform.uipath.com/api/account/authenticate
and format of the body :
“{”“tenancyName"“:”“tenant1"”,““usernameOrEmailAddress””:""tenant@gmail.com”“,”“password”“:”“G123!”“}”
this is the result I am getting:
“{”“message”“:”“Invalid credentials, failed to login.”“,”“errorCode”“:1000,”“resourceIds”“:null}”
can somebody help?

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