{
  "manageEntity": {
    "action": "Update",
    "entityId": "774139616",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcc6c3ab6d925966e52f74cd4525ed8557aaee3bebc34c54828192fc2e42838a6",
    "signature": "0x798c6e71f1846deec73b032d09bb06860445f1143aa2941eaa4ee77541e4018d0cd3cd50ab589a5558dcc94acdf607971551749d48c35aaca52fcef1091833881b",
    "signer": "0xE0B9fAADE68023234860f0824D37F27730bF8C16",
    "userId": "774139616"
  }
}