Gremlin queries containing Nested Objects & Apostrophes

I'm getting into GraphDB and I've just started making use of Gremlin alongside NeptuneDB to build a demo application.

I've been running into an issue for a while now, first is:

I'm sending data to the Neptune DB that contains Nested Objects / Array of Nested Objects, what's the better way to run a Gremlin query that creates a property with the objects therein?

What I've had to do is write an algorithm that checks if i'm sending objects, then I stringify the object before sending,

Then whenever I'm receiving back the data, I parse the values from the keys

function generateGremlinPostArticleQuery(data) {
  let query = `g.addV('article')`;
  for (const key in data) {
    if (data.hasOwnProperty(key)) {
      if (typeof data[key] === 'object') {
        query += `.property('${key}', '${JSON.stringify(data[key])}')`;
        continue;
      }
      query += `.property('${key}', '${data[key]}')`;
    }
  }
  return query;
}

function generateGremlinPostArticleQuery(data) {
  let query = `g.addV('article')`;
  for (const key in data) {
    if (data.hasOwnProperty(key)) {
      if (typeof data[key] === 'object') {
        query += `.property('${key}', '${JSON.stringify(data[key])}')`;
        continue;
      }
      query += `.property('${key}', '${data[key]}')`;
    }
  }
  return query;
}

function generateGremlinPostArticleQuery(data) {
  let query = `g.addV('article')`;
  for (const key in data) {
    if (data.hasOwnProperty(key)) {
      if (typeof data[key] === 'object') {
        query += `.property('${key}', '${JSON.stringify(data[key])}')`;
        continue;
      }
      query += `.property('${key}', '${data[key]}')`;
    }
  }
  return query;
}

function generateGremlinPostArticleQuery(data) {
  let query = `g.addV('article')`;
  for (const key in data) {
    if (data.hasOwnProperty(key)) {
      if (typeof data[key] === 'object') {
        query += `.property('${key}', '${JSON.stringify(data[key])}')`;
        continue;
      }
      query += `.property('${key}', '${data[key]}')`;
    }
  }
  return query;
}

Secondly: How can I escape the apostrophe in my strings " ' "? I know of using the forward slashes \'...but this doesn't work accurately when I have nested JSON. Or different data structures across my request body

P:S - I'm a beginner with GraphDB and would appreciate references to using Gremlin/NeptuneDB as well as there aren't enough documentation out there

Gremlin queries containing Nested Objects & Apostrophes

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