{
  "manageEntity": {
    "action": "Update",
    "entityId": "579019814",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x128df8d1b0e3321db3a5c6815529823d3aafb01f9706f835c4b69a667641ac5a",
    "signature": "0x1001ed1f97efe7cf1bb3c6d4b92c7942b4fb80ed536b80389cabd9841a62f890586e0f4f1cb019da9c8e6f8d5bc73d80cd0adbb3ea8a93ccae1b0ee273699cf31b",
    "signer": "0x5B01df050c773fa1D1f9A4aA93A9237C8EA2fEEb",
    "userId": "579019814"
  }
}