{
  "manageEntity": {
    "action": "Update",
    "entityId": "538675500",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc1aa4bcf00ca7273a3ffed051fc03372b62eb297bc6e4731351b9470ce40c3b",
    "signature": "0x98c41bb63a8d694fa7c86fbf5d5c903a95e50ac5ea30740d03661f2281f9b4684080985d67233d3c8e1e7d9a27f8a4918b18d74615a406d7f609892ddcd923211b",
    "signer": "0xfa67138510661b6c60260Df80fb52B3c8172991d",
    "userId": "538675500"
  }
}