{
  "manageEntity": {
    "action": "Update",
    "entityId": "838833981",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf27443d50cb634218e61eee8f8262a06fa01b40327f36e0175473d210f3b5320",
    "signature": "0x62d3c1fa8a53c534954d11b4e16e6fd81fb9b9d3473a58f5d07f2c50d0e19dbc6abd81b6d8fcc6531c959a29f84ddb21437c5533a882b1b9c44c23506dd13e0e1b",
    "signer": "0xF266A0128D402f3084C1CbDE99a46172AB58EBe7",
    "userId": "838833981"
  }
}