{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6034e89c61e4a7b4945d5b6a15d38801d0a122afc4ad2d66ede15e5ac8255df9",
    "signature": "0x3c1be8c9b2c331bac73d55f0e7de64986b1183aa3b52da12ea51de4d0ec01ef6730ef239ff20827000c6840571007bb9e2cabaf0a723f8dcf14d6d35835e96301b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}