{
  "manageEntity": {
    "action": "Update",
    "entityId": "279338592",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierar3glj4hmqfrszgazpyaghyiy5ujs6jgnkl6zza6tqu4njle5rgaq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1330899874},{\"type\":\"playlist\",\"playlist_id\":1547865371}]}}}",
    "nonce": "0xd3a475d04c4ef2f706c01de1237e10b7fb0dc2069a255e7d69c625afdc790c3b",
    "signature": "0x2b3bea4847c7ef901e58c70d494576360d348a0275e9fff66357cd47608460c738c5b343cef5628bf19cc440f9fe1b64355f69c058cbd3d78e18ef747737322c1b",
    "signer": "0xCa4b5280477dd345E5dc2001EbceF7be93Af19cC",
    "userId": "279338592"
  }
}