{
  "manageEntity": {
    "action": "Update",
    "entityId": "510418094",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2223b96d1196bcafead18d8ec2f9ae9aa97862ca2157d25167ba46e64210ca4d",
    "signature": "0xdfdf965612b5b9d8c1ac73d958fd89a929fd3c06bf17a658fcf1c4ac25a4491151200dea6e5717b85f8b44a0fcc59e634f689ca56a3f622712dbe94e6870c66c1c",
    "signer": "0x83c0371ED43bE3191863Af75C6AA404fD90F0F5A",
    "userId": "510418094"
  }
}