{
  "manageEntity": {
    "action": "Update",
    "entityId": "850489604",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera5dob2aytuyqltbwwcfibkyzoh6ykjrtj7k57q3lclrujw63y2rba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1248699039},{\"type\":\"playlist\",\"playlist_id\":641724839}]}}}",
    "nonce": "0xc0b29c55e60b68c248e1adcf5a20f59b75fbd7f4b106b5ebe90d3e0415eed609",
    "signature": "0x4f0be375776206d2dfa8854ad5ca0ede25cf531ec3771f4df33562b6739529bc3e9af3688ba3fc7649e18e34f35ab7f1b4fbd10f63b98dcaaf7f7356b26497061c",
    "signer": "0xE58798A8eCCb4b8474bdDB89D94c8151E7BD4D10",
    "userId": "850489604"
  }
}