Pass object as prop on Vue

I believe the problem is somewhere else in your code as passing an object as a prop is as simple as you imagine:

// register the component
Vue.component('component', {
  props: {
    data: {
        type: Object
    }
  },
  template: '<div>Data: {{data}}</div>',
  mounted: function () {
    console.log(this.data)
  }
})

new Vue({
  el: '#example'
})

HTML:

<div id="example">
  <component :data="{x:1}"></component>
</div>

Here’s a fiddle showing it in action:
https://jsfiddle.net/tk9omyae/