{
  "manageEntity": {
    "action": "Update",
    "entityId": "297443813",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39f729a51d2b1fe2bc535ecdc1566810f9b0c5e7fdc64ae5a0bdf4e2c19dbec3",
    "signature": "0x246279191e0cad3f36a7468267689b9e968ee718efcbf6f469cc429bedbfa27c3c8d54159e33582b4cef40d0990f93a4307eaac4abea54b47a6f0c38053884b61b",
    "signer": "0x7aE45CC330C497071790595228269c0cD3a72A8e",
    "userId": "297443813"
  }
}