Simple nested array issue

{
  "kind": "collectionType",
  "collectionName": "defaults",
  "info": {
    "name": "default",
    "description": ""
  },
  "options": {
    "increments": true,
    "timestamps": true,
    "draftAndPublish": true
  },
  "attributes": {
    "showProfile": {
      "type": "boolean",
      "default": true,
      "required": true,
      "unique": true
    },
    "sections": {
      "via": "defaults",
      "collection": "section",
      "dominant": true
    }
  }
}




{
  "kind": "collectionType",
  "collectionName": "sections",
  "info": {
    "name": "section",
    "description": ""
  },
  "options": {
    "increments": true,
    "timestamps": true,
    "draftAndPublish": true
  },
  "attributes": {
    "title": {
      "type": "string"
    },
    "contents": {
      "collection": "content",
      "via": "sections",
      "dominant": true
    },
    "defaults": {
      "collection": "default",
      "via": "sections"
    }
  }
}



{
  "kind": "collectionType",
  "collectionName": "contents",
  "info": {
    "name": "content",
    "description": ""
  },
  "options": {
    "increments": true,
    "timestamps": true,
    "draftAndPublish": true
  },
  "attributes": {
    "value": {
      "type": "string",
      "required": true,
      "unique": true
    },
    "activities": {
      "collection": "activity",
      "via": "contents",
      "dominant": true
    },
    "sections": {
      "via": "contents",
      "collection": "section"
    }
  }
}