{
  "manageEntity": {
    "action": "Update",
    "entityId": "607458690",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1264393fb98ce3d25a59271749eb1471c30445ed6d37c7dfe1ad78ab085101b4",
    "signature": "0x7f59abc552734dd30605c2617482151b03e88d1c6013af1e056b99bf4f6c6bc575ee0488ac69f5ac180cb28e91fcd8230c44409105dfd9f17b63bbe6c2f9d7ee1c",
    "signer": "0xd3776dAC5E807D17D3cBFB28F2e8Fbdb42Fd9e11",
    "userId": "607458690"
  }
}