PERMISSION_DENIED when invite people to google my business profile account

I'm trying to use Google API to invite managers to my business profile account My role is "OWNER" and I try to invite someone by email I used OAuth playground tool to achieve that.

scope: https://www.googleapis.com/auth/business.manage method: POST URL: https://mybusinessaccountmanagement.googleapis.com/v1/accounts/108463676430689610134/admins

request body:

{
  "role": "MANAGER",
  "admin": "mina.zakaria.zakher@gmail.com"
}

response body

{
  "error": {
    "status": "PERMISSION_DENIED", 
    "message": "The caller does not have permission", 
    "code": 403
  }
}

I don't know why permission denied while I could add the same email using dashboard? any help?