{
  "manageEntity": {
    "action": "Update",
    "entityId": "396846725",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4346a49080da75f1ec4d52902ed1e05b26eac9c034daf2df8695a9b544243001",
    "signature": "0xe17aa987d444ae7a79a8e059ef8e91ec257c050eb00c2935d2b797d65a33aa1804f16c6168da3dfb714791fe244b4d7c250641c1db573432d2bcfa5e2e45372f1c",
    "signer": "0x1DDF504d670D731814644fddA41dB72Fa7A2A4fE",
    "userId": "396846725"
  }
}