{
  "manageEntity": {
    "action": "Update",
    "entityId": "455252061",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc4a7e44e442138d5cffddf760f0b4ecb0a46cf76cd9a82f3da00603e534d88c6",
    "signature": "0x8c155c078b522ce0e76cdbc2bf7fbc212a59981db9a08f7b8b9220b83853f5191f3cd87f557ab0f2aa9add4bef83d17862a8e6648e046c97153ab3497142428b1b",
    "signer": "0xcf135AbEA8b552C3D6DcfC900D43C34507048Eea",
    "userId": "455252061"
  }
}