{
  "manageEntity": {
    "action": "Update",
    "entityId": "603150527",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7c35d26fc25efb965f4ae22556635baedd296131249c156e8e92b78efb728054",
    "signature": "0x38acaf1ae7a279da92236e2ca967065446ad46249ccc887096a9f53e5aa24486238df2412041895e3133f58a093282641b086e120421ba660e975170dfb528581c",
    "signer": "0x018fbC33CC778209B821C14f95CBe0C368E33bda",
    "userId": "603150527"
  }
}