{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa7a459d5c2c9576316a89df4a8fc837c5e37d4c573e716dfa98306175158ba1",
    "signature": "0xeb69bd8fb7be33d5e4f5849f3eaa52b1ec87531063dec9b102d89eeb46418f786774982052017123888e502f80221998c633a24a16d68c312dd686823cb0bcad1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}