{
  "manageEntity": {
    "action": "Update",
    "entityId": "574305165",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x75c7eea242fc0f27e40dd4e6c9dbc3a204a5bfc9b37e197197379fe1fe40acc1",
    "signature": "0x2db00b4beccb55ba8fd1dffb932f86adf0734926399be024a6826d865820435a6c9180ac79826179c1fe17193707e6168a6d3369bd242fb1f5c63935636c79631c",
    "signer": "0x91b4Be04AAd78c3803b5a79B4585f1A6712eED3F",
    "userId": "574305165"
  }
}