{
  "manageEntity": {
    "action": "Update",
    "entityId": "735463452",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe53af3587cf88bda77fd50ff7f7384703295dd554dfb87da122d32217e883796",
    "signature": "0x1e4b858e3d9aa148f00ee1a321948c37b772c9db8a1c3044455e931517fe6e936392c22f593c4492a9bd3ca535d40fe09ec863648794d7e8ee920ad4b525709c1c",
    "signer": "0x8f2ebBA3522f46F14A1fCDe5312c7B9EA0E59e15",
    "userId": "735463452"
  }
}