{
  "manageEntity": {
    "action": "Update",
    "entityId": "623710898",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x59a08704af187cfc42d3bc248b31232c5bc539ff7632695db9ddabc562c813aa",
    "signature": "0x926a3b7323d0a4bff56d4689172a149f5c44bd301264dbb76486da812bce0f7a47502915378b42064df24deb93ad60eadf386b7ee49f9a8e17c586b9569d568c1c",
    "signer": "0xE00615A8AC0c340CA4CB8e8843f31A8104345D5D",
    "userId": "623710898"
  }
}