{
  "manageEntity": {
    "action": "Update",
    "entityId": "116504833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3e38a432b36f1202a95498c4374bd70294223122cde430d07bb3b871a29630c4",
    "signature": "0xd2915bb02667244e20425338caab99c8b568533a580eab896d6e9ad701535fae146869962bd6e351fca3055579891a3863253847a5b31bcbfdb341e310559a001b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}