{
  "manageEntity": {
    "action": "Update",
    "entityId": "904203901",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7dd0f87e85e791f75693af46744c365666d37d25d298ba52b47853f4f8b7b3ff",
    "signature": "0xf5c668ae2c7d6e786bed333e1d2719a3ff2f66e788b475ce2adb5bf66a62657c4ff0b772bcf04b940482fd88d2a43949b43844baeb515c8acdffd6c5cab1dafe1b",
    "signer": "0x593703ea1C2569C6c13F5baaD26d4c5Bf952C46f",
    "userId": "904203901"
  }
}