{
  "manageEntity": {
    "action": "Update",
    "entityId": "351286634",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf0a4c8539cfcebf97fbac06e97851b0eb75298375118960527d422c597596cba",
    "signature": "0x8365e61c42279f073b296254605647fca781e75e6d4b6e5219044697609c491f651008ffcc6fac73f9cff51999a0e8104f95309d4bbb66cd085810b3385ed1441c",
    "signer": "0x8f7609696F22A45a941d7B35bcB4287FDeb59DD4",
    "userId": "351286634"
  }
}