{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5a48bb822d2c33a892a350e1b3f16baa57d872273e33b9383fb0becaf14ef1c7",
    "signature": "0xf3bed3d49cfa3ff5f0a00c4d56256ceb4124daeb2d82b267caaf9edaa7c1d80577ffed5f2ea0edbc368c66d1fb176b27a6705668a7fec8d2955e41938164dd2f1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}