{
  "manageEntity": {
    "action": "Update",
    "entityId": "320233590",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e30d4c573de9b52fb8e9154355cedcecc21d95190c31a70623541d54476a3dd",
    "signature": "0x8530c95d7f2caa3728eeb9107fba50c1031ebd66006d30aa5efb84ebceffffe35b5e1aeb08dff89830d2b752c7127441c42da51147eb88d267a4f945f1ff11f21b",
    "signer": "0x8de9F00D30b91ba6fc08575F2d24D49d971AABf9",
    "userId": "320233590"
  }
}