curl --request POST \
  --url https://api.example.com/v1/provider-mcp/oauth/token \
  --header 'Content-Type: application/json' \
  --header 'authorization: <authorization>' \
  --data '
{
  "grant_type": "authorization_code",
  "code": "<string>",
  "redirect_uri": "<string>",
  "code_verifier": "<string>",
  "client_id": "<string>",
  "client_secret": "<string>"
}
'

{
  "access_token": "<string>",
  "token_type": "<string>",
  "expires_in": 123
}