curl --location --request GET '/users//principal'{
"principalId": "string",
"sub": "string",
"email": "user@example.com",
"firstName": "string",
"lastName": "string",
"createdAt": "2019-08-24T14:15:22.123Z",
"updatedAt": "2019-08-24T14:15:22.123Z"
}