{
  "manageEntity": {
    "action": "Update",
    "entityId": "385103139",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda0ae669705a58d0c9e97cc7e88cd7ea350c75646af6969a8b1aebfb28b06cdd",
    "signature": "0xc59890f6934301918225c47038671c85c3928b34bcb4f85ee977879b90ef336d4ec1518707a191319939585fa79ee4121efc02eb339cb9ba346d20df845945111b",
    "signer": "0x9B2c19D12666dd316e2A4f87E04c1B24d0a8255B",
    "userId": "385103139"
  }
}