{
  "manageEntity": {
    "action": "Update",
    "entityId": "509785341",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe25d2ae926b8c883e974516087f316ed20d1af5544d2e79a98527e871eb80a17",
    "signature": "0xd56712cc3a25bf71a495110bf7a4e6b7d473e93c200c7b8e30e93ddb598f2c224928006a02f2e17d271540acbb0cdc3f6585cea99f022049d4e4b239909665091c",
    "signer": "0xb7FB61127f6E78ab910D1330Dd706ae21eBa28A3",
    "userId": "509785341"
  }
}