{
  "manageEntity": {
    "action": "Update",
    "entityId": "211770148",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraauzi53nzbuuss3itidl2jya6m5yavvrl65lf4ltecv3twec4452q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":39848}]}}}",
    "nonce": "0x4ff46f14ee2c7458d6fff4cdd17d1779eb2f47e3071799f272f2fd77c525186e",
    "signature": "0x06bd82cef7a9c75c3afa61b08bcb188c11981db7b692acd8a0d8ccc821177edc58d856b56c58566509909affd2222bec82b1412006494e16be31806a81774b5c1c",
    "signer": "0x72dD6E54C1904BDCf2b8a654d8CD35Ba1CeE11F8",
    "userId": "211770148"
  }
}