{
  "manageEntity": {
    "action": "Update",
    "entityId": "530411768",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdc9617981737323e1494b3595b7c067d686817835757e0c34198f7557880a773",
    "signature": "0x785e87fb8b54c03d1cb1e1720e0005c337dbeb1da1139af25fcdbcf0950084f624eacd9509754e3cd3102ab5435590c33bf583f9f93efcbaa2016562e40f145e1c",
    "signer": "0xBFBe3Df385F004079a61a5bf8502e799180bD88E",
    "userId": "530411768"
  }
}