{
  "manageEntity": {
    "action": "Update",
    "entityId": "936222312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd559dc48dcb64667c8e72db57f1d2589de27ec43fd43973e664dc207d1f4102d",
    "signature": "0xe190942d9fd7b2f48afa8544210515f6da13bff48eeb882b346c7977945d665f5e159332d80baacc6a9624fb161a32d4dcf01e360d4ac2f471cdc2eb1883651e1b",
    "signer": "0x9789B550B67E84E63126A0E4CE6f1c6E8Bc7C40A",
    "userId": "936222312"
  }
}