{
  "manageEntity": {
    "action": "Update",
    "entityId": "218905146",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x33f920cdd555e490e2388b943817b8d973962647723b33d4b192b138d67bd0e1",
    "signature": "0xafdc5b3a54cc5fe7e1cb4ff2640c4f9f04cf76fd99e7be8f5f946fb09861dafe13f97291e8b22bdeeb86233e4246ada1402d46623b6fb9c9ae49007e3f80cb261c",
    "signer": "0xEb4e1A10905446A56f49f98410a709baf1F3547d",
    "userId": "218905146"
  }
}