{
  "manageEntity": {
    "action": "Update",
    "entityId": "403030589",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfb40d9be085a9e4fcbfd425a540329e39585995a234cdb0f55d0898a6286c707",
    "signature": "0xf295c94bce5cf34afd277940d56896d665a79a4790bc88a6625e9f0412d5d43b6613af68b3a58da5b0ca91a4fcc466b31f580dd26fb1b9360d9b5002faf6e2811b",
    "signer": "0xE988e6Eebc4127285f629AE1492891F39a8a127F",
    "userId": "403030589"
  }
}