{
  "manageEntity": {
    "action": "Update",
    "entityId": "521699858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbd46d026bb0cb6d59434541f9539ee14ecb7a0712b517a17c42d09df54b1ffe2",
    "signature": "0xb5b97a36537f4303e35aabf3d0c0390b039b76eef04ae230cdae3e1ee9ce520b4a537820b4d3d870cb86f673ecd142f500a689db8a3c88ad5ab8081b758da2001b",
    "signer": "0x26e5edB5490F2Fa4897626dD634f29302117aa7f",
    "userId": "521699858"
  }
}