{
  "rules": {
    "users": {
      "$uid": {
        ".read": "$uid === request.auth.uid",
        ".write": "$uid === request.auth.uid"
      }
    },
    "recovery": {
    
      ".read": true,
     
      ".write": true
    },
    "publicIds": {
       
      ".read": true,
      
      ".write": "request.auth != null && !data.exists()"
    },
    "groups": {
      "$groupId": {
        
        ".read": "resource.data.members.keys().hasAny([request.auth.uid])",
       
        ".write": "data.members.keys().hasAny([request.auth.uid])"
      }
    }
  }
}