{
  "manageEntity": {
    "action": "Update",
    "entityId": "304953428",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x062066ccdf4e12da573238034b39c962bf1cccec2d9e9210f4ab00ba98f40e0c",
    "signature": "0xcb731946702c457f29f380f60994b2aeb400c3c778a24c0dbd3c7201d0a1a66221dad02d03b856b75581e23b3da8fee4a4cce85fd2c321332a672dcef748f9731c",
    "signer": "0x20535D7624382E7F195D0dB88bf0330b5969415d",
    "userId": "304953428"
  }
}