{
  "manageEntity": {
    "action": "Update",
    "entityId": "572021442",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfeb47e95cc5e16df7d0775b9da851f77a7fcb740a478cb28e8a6d7d00bd031d3",
    "signature": "0x2b7fb0d0f981723ff9e0ca9779d2172cc6039fcef13688aff7f2e92c461fd7e87953dfc4fd8f8482e87ada5a524b3430675f33a69b3b1592ab6b5894aa201ec31b",
    "signer": "0x2caB1F25ffF29Cfe92109050CA216b9Ba52bf6A9",
    "userId": "572021442"
  }
}