{
  "manageEntity": {
    "action": "Update",
    "entityId": "935233121",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x693cfcdfb631b1c1843102b77eac840ae02b58c245cdb079f2260bb79b2a8702",
    "signature": "0x5c6a9e9128619ae07576e52aa9acbb74c6d0cba45540b725d3abfb2237adf36f3a17a46ca3ac8751afc6b5facb5cb84b3651ea806be277553421833c36a1d3a51b",
    "signer": "0xcbfa37Cb060CeD9c3105305deAFE6c7AE9a9cfa3",
    "userId": "935233121"
  }
}