Create Project with GAIA REST API and Power Scripts

struct _template  {
    string templateName;
    string newProjectName;
    string newProjectKey;
    string projectLead;
    string confluenceLink;
    string username;
    string password;
    string projectType;
}

//Build JSON data
_template t;
t.templateName = "templateName";    // Replace templateName with your template name
t.newProjectName = "projectName";   // Replace projectName with your project name
t.newProjectKey = "projectKey";     // Replace projectKey with your project key
t.projectLead = "projectLead";      // Replace projectLead your project lead username
t.confluenceLink = "Confluence";   
t.username = "confluenceUsername";  // Replace confluenceUsername with your confluence username
t.password = "confluencePassword";  // Replace confluencePasswordwith your confluence password
t.projectType = "software";

//Generate HTTP request
HttpRequest request;
request.headers += httpCreateHeader("Content-Type", "application/json");
request.headers += httpBasicAuthHeader("<username>", "<password>"); // Replace <username> and <password> with your Jira credentials

//Send requets and get result
string result = httpPost(getJIRABaseUrl() + "/plugins/servlet/gaia/rest/project", request, t);

//Display result or error messages    
number statusCode = httpGetStatusCode();
if (statusCode >= 200 && statusCode < 300) {
    runnerLog(result);
} else {
    runnerLog(trim(statusCode) + " : " + httpGetErrorMessage() + " : " + httpGetReasonPhrase());
}

request.headers += httpBasicAuthHeader("<username>", "<password>"); // Replace <username> and <password> with your Jira credentials