{
  "manageEntity": {
    "action": "Update",
    "entityId": "881096998",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcfc6e3236a2941b7ba9690dbfdc6381530ad52cad9f0397bb65188d02b176300",
    "signature": "0x02e87e477761f126cab89be9787236801f9feeabe521d3b7e1fb9c3510971abf2cc4faa47d38089a9080c4905d538246e3a37ba5d74ba2f54f5432d6e4c9107a1c",
    "signer": "0xeFd7cAFe4638a5f68E7eACA3C7eA2DD6Aba6Ad56",
    "userId": "881096998"
  }
}