{
  "manageEntity": {
    "action": "Update",
    "entityId": "19314474",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x94db77c63b81ad6ed17a4c21818bd94c79b6297d3f4d13229833de2966382b9a",
    "signature": "0x75bfb1b48ca6f7a81b8efe2b1415fb5326b351ed11187c182c7ad4bcb6cc05bd0571e3b77956dddeee1b903c255208c48dc61611bb3a5dec650eacb65108f17e1c",
    "signer": "0x350FD8fdeE689C7E6bE0E9b707Fe096ae24f9B35",
    "userId": "19314474"
  }
}