{
  "manageEntity": {
    "action": "Update",
    "entityId": "383246485",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd0bcbff41dfbf26457ee3f1f10b8b0ca7eada70a49a8c70c2e8832742f4878bf",
    "signature": "0xe99f1ab1ce2a50395041deff3ff01b7ef96d257e641059409d04734e43d643df16046e0bdd34371130e62ccb1e318d582ed8de3124c21a53690c1653d66774ae1c",
    "signer": "0x8fE23580516ef5596006BBc1541D2dCab23bCE56",
    "userId": "383246485"
  }
}