{
  "manageEntity": {
    "action": "Update",
    "entityId": "554071215",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc2e77dcfe5758006fe819ec4a48f7974f9bf85c73a96a2b0a6d61bf8c8c45b93",
    "signature": "0xd38bcbd8f8e434985115b7f64315fcd629ed5903418f75b08aa3c4863412f6326d12c04eff1c10a8143b8e87cd7efd19b826419380caf074fb79dbcad7e7d21c1c",
    "signer": "0x204ac030AeCcD7748FDe06DEd2F1C858Ac9b5bAC",
    "userId": "554071215"
  }
}