{
  "manageEntity": {
    "action": "Update",
    "entityId": "536201590",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43289d591055078f3f6df04d09858f0a3780d68f8ca4a49614786e13b87b2c18",
    "signature": "0x59c9849526589da122d7ce45eb13253c83f035e616498a5e7f341d8b32face814b9aaeb296cecf45f2e4a9a7e4d8174e67b6f116bfad8d63a51148b91fc3d8ac1b",
    "signer": "0x60Eabc2D30d69b6119477978449B83121eE082fa",
    "userId": "536201590"
  }
}