{
  "manageEntity": {
    "action": "Update",
    "entityId": "311488849",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa207f85f352d1c24f6353b01e8506068f748416a13d3a65a2b437fd0c0903483",
    "signature": "0x7bff0c33ffb3c94784b1fc087a7007f1046d1b8a35480e69580bc36850f9e6a94f0fdaa44461e204c345d44daf49d464b66472170ab320ae258ea295bd3bc1781c",
    "signer": "0x9ac9E9693AC87D8C5a1dAc686f36FE82547496f9",
    "userId": "311488849"
  }
}