{
  "manageEntity": {
    "action": "Update",
    "entityId": "500561533",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb9fc62ed82f4f6deb8ec1958c5f71e141fa8ba749e8632099ba62b467ca258e1",
    "signature": "0x4ddcaf5751916ada825a1c2027f831392d781243f9a6bcb7e988599f92b2bf2307ba5bc4fd046af923ef312f4da67c513e8f90c8a64a5f720671067406611e331c",
    "signer": "0xA40BB7f136d32cD2fED178eD2b8ac519dA86B8Da",
    "userId": "500561533"
  }
}