Would it be possible to do lazy loading in Relay?

I have a Parent component which contains many Child components as an array. Each child component contains a huge amount of data. So, I decided to not load all of them when Parent get loaded. The data fetched from Parent container is as following:

{
    ...
    childs: [childId1, childId2, ...] // Array of child id
    ...
}

Then, I would like to send one request per child by passing the child's id to back-end apis. Each child will be show up on the UI whenever its data get back, otherwise, a spier icon is displayed for indicating the loading data.

Would it be possible to achieve this in Relay?