{
  "manageEntity": {
    "action": "Update",
    "entityId": "498611290",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3ff1f44b8512f9680dbf348541680f429a92aeed296f0bb49bc72a4c60e90c8c",
    "signature": "0x0978ddc3d6346e31c6b644cac4cdf9d925e338e9b2136ca620598dec60b79f1627b0c545bbf1b5ed37c38aaeb48416750fb24c29fe79435d8c78879e855cbbb11b",
    "signer": "0xE5B01ffC0f6C8237F3F8e55b3c67A263E1f9a4f5",
    "userId": "498611290"
  }
}