{
  "manageEntity": {
    "action": "Update",
    "entityId": "779322585",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x823197b2b1af42d696fa0444fb4838cd22dbbbe30f912fb399bb39c8fd495d48",
    "signature": "0x04254016c1aa50797c6d42d8efe6978b0e50ed675d5d3df75b84bae83edb44ce5e88c6eec1d476cca6d73ca849e3d77a25593df7a7fd99f3901ff590fbcfa3c01c",
    "signer": "0x450e78D014CCDAe44e2CA973Daf729184AE9cD6b",
    "userId": "779322585"
  }
}