curl -X POST http://localhost:8080/register -H "Content-Type:application/json" --data '{ type: "pull", client_name:"test-app", client_url:"localhost:8080", client_description:"example app", redirect_url:"localhost:8080" }'

POST /register
{
    type: "pull",
	client_name: "test-app",
  	client_url: "localhost:8080",
  	client_description: "example app",
  	redirect_url: "localhost:8080/callback"
}

RESPONSE
{
    "client_secret": "someclientsecret",
    "issued_at": "0123456789",
    "expires_in": 987654321,
    "client_id": "someclientid"
}