{
  "manageEntity": {
    "action": "Update",
    "entityId": "408467611",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbe26539fe051f142925f435c94074154ffdc08a3d6f8ceda6cdc1ca436eeb834",
    "signature": "0x668a6676f35d3de9a132e839e970734bd620395b4b3b40685c839c45bdac520b7b1273e6f2b3954002f43a70415cf0cee958fa3c8a1aa973cbee8e95d85568cb1c",
    "signer": "0x40508cD93A56BbA120f0AFe8223C7367888Db11c",
    "userId": "408467611"
  }
}