{
  "manageEntity": {
    "action": "Update",
    "entityId": "552753858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x887df51eb604b032eb1198e622e84a6048d9ab6ebf53148a75b88772de7267f3",
    "signature": "0x671d19e493eeb61faf8d03207af04180384940e467673f399a8049ffac7de9771089a68cab8880a088497f43c23f9ea8736d9b29f58cbf5a8543d6d0fdac67901b",
    "signer": "0x8E3A4E1A0d1Aa7628E0FDbc872062F921A449403",
    "userId": "552753858"
  }
}