{
  "manageEntity": {
    "action": "Update",
    "entityId": "622722130",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraehgjdmgawytmg3awa6jblncccd2luuocb2keejss5jvapoqbtliq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":918184430}]}}}",
    "nonce": "0x9eb7e301c4900c444d0cc2090583271050cfbad4ac7f2bb9f2465f7e0fede042",
    "signature": "0x88684a6654941fde9c9ff7099927eb5215f041b1f6c88746b312cc24993068e8357e50c84113f3c328a891870ebae115abcfd8372ede42a0e49024a1c451ff121b",
    "signer": "0x9861bBD8DaBC2D1197dB75a1309CcDdD9Dd03354",
    "userId": "622722130"
  }
}