{
  "manageEntity": {
    "action": "Update",
    "entityId": "154085595",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16e5f0643ae368adbe2b673097dbac04d84a6f0116465d9163e80166024a3287",
    "signature": "0x5a66d492f482690033513364f54c9257bb9aec694b6de6abbd807467dd00fb72363d6ab7d61d1da6d07313a9eba67cd427b67a06509741c724cfd98140da296f1b",
    "signer": "0x5b8BFea922d3E94c01D9b58040d1Cb4E8BE244EF",
    "userId": "154085595"
  }
}