{
  "manageEntity": {
    "action": "Update",
    "entityId": "665864521",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x93cf9f4bfba1c423d5dffa08799076e11a7e2eacae5b6b154d9ad33df3600524",
    "signature": "0xd5804a2410d130e1ac010e148e5f2f865bfdf16973d8c0d2f53e52910fa8a2e43b2bb3191aa631a6e41feee238cf590fedbabf8e8c1678557cda36a1aa8aea3b1b",
    "signer": "0xb6413740e5fDCf62484E710B6c61C3BaA17b64D7",
    "userId": "665864521"
  }
}