{
  "manageEntity": {
    "action": "Update",
    "entityId": "450282437",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f34c1771ab98f029bf396dc83d47e02754fb32edfc8e033e0b61387c6ead407",
    "signature": "0x41c5675c43942fc54ce7d9883f328061e1131edc9874731743ffc86e64636a286d18c01f8f77dabff33b74f4a8820b326ff90871530c622b7c080c9369ea80cd1b",
    "signer": "0x22ced72E64A434FC50393fF8e62bFCdB22AafB6B",
    "userId": "450282437"
  }
}