{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x91039adb7615b013a0732d8630021f60c56f397616f057c8f7f4ac84686b4444",
    "signature": "0x9f7c908b12bddc63d85745ec8f8e862689eab18802afa3598d9944032d1d0046024b0bf85f57578ed7421ebbaf06a7e276fd7cb5a4cc843a7612195b8a99f9e91b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}