{
  "manageEntity": {
    "action": "Update",
    "entityId": "523955400",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebc1e26982958b40539e1fa388f90cdb09e6c4cf859515c17ca31ed561e62007",
    "signature": "0xa1e077ab1245441a5ea77ff2249d582fa906864e63d36a8f1515bad9b7cc87593bd92cf30a58fc692650c2cf0563ab8544e7f79a4cab1b870ead1780c60d968b1c",
    "signer": "0xeC35faD99f57B621720084Caff5a3D547F43855e",
    "userId": "523955400"
  }
}