{
  "manageEntity": {
    "action": "Update",
    "entityId": "551213589",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieral5hvqbesscf2p2pbl7uqlxensehs6rojqbnel2nkzke3j3pxvwya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1896780202}]}}}",
    "nonce": "0xe250ce1def785bfcd868ed66b4b32d232fb4cd04744afec365a1239bb90a8edc",
    "signature": "0x1df695adbeed61b8fa49b966741af201f7a2a9f9fc7ce3985ae96ba5c044b6a7277481f474089feeb4b7ffec0d829af659a76798dd4f0b07e8ce8cb930bfae571c",
    "signer": "0x249Ad7035193fd21b181328D2997046dd040412F",
    "userId": "551213589"
  }
}