Fetching Data from confluence page, inside a table via rest api

Confluence Development Confluence Data Center
1

Hi, i want to fetch data from a confluence page and populate it into a drop down field in Jira JSM. I could access the data via api with this code:

import groovy.json.JsonSlurper

import org.jsoup.Jsoup

def confluenceBaseUrl = "xxxxxx"

def pageId = "4522360" 

def username = "xxxxx"

def password = "xxxxxxx"

def authString = "${username}:${password}".bytes.encodeBase64().toString()

def url = "${confluenceBaseUrl}/rest/api/content/${pageId}?expand=body.storage"

def connection = new URL(url).openConnection()

connection.setRequestProperty("Authorization", "Basic " + authString)

connection.setRequestProperty("Content-Type", "application/json")

def response = connection.inputStream.text

def json = new JsonSlurper().parseText(response)

But then i could not parse the table or specific row.

Can someone explain me how to solve this?

best regards,
Tarik