{
  "manageEntity": {
    "action": "Update",
    "entityId": "894431219",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraqleej3tzmknwq2uqgbsupa7at677urho2seeabo76u7q4gsaakka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1115425638},{\"type\":\"playlist\",\"playlist_id\":1770569423},{\"type\":\"playlist\",\"playlist_id\":1969961867}]}}}",
    "nonce": "0x7f772eccb8d0c3dd733f0b3bc3d705f537a8cafa21e70f247cfe3960483ec849",
    "signature": "0xa02724d0f7f028e2ab704bb369fef245a9ed63829076fa11ea5461d3a5f5a16440c054789749e65e686763eb368ebbcd78bb847e9569d808df2e770dfc94d11a1b",
    "signer": "0x7BecC80331FC470e72A8032bb2d07335c44AF1ad",
    "userId": "894431219"
  }
}