{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe6ac750cfca47453ee0d24f9de97f4fa7e76c8a04b07746a6f6dda56abc92659",
    "signature": "0xeb9b07f5281a38c45f60b06174b502f3847e58aaa0f6d5e5720eb62f5da909b05dff370c2b23950700474361177179f72a9e4494aaeb691f6d9feb229142cc4d1c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}