{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2179160e76c7d4d45903ddc6951c43ba5176950deaed6930776b97b7fe5c8e53",
    "signature": "0xb52e49f29df20e5a1a5458eee3a8860c1c7a2c88b530661551c374c215a12ec6265224e3490799aa790707584188986706a265691a0df5c7161199a1de836d851c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}