{
  "manageEntity": {
    "action": "Update",
    "entityId": "641557420",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajnsr7a5rcdghrxuvuialkgelsjcbxpcwklez4ydmqtxcqyhcpzda\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":553669516}]}}}",
    "nonce": "0x3140e8972d5ba8148bf0300d225c8ad763bd19982c9f3587dd8797ed1f7fb3b8",
    "signature": "0x65048332d8ef5409dad23b43a631f3e0abeba063f8aa9230376811cd2e174c922f62068184faf17506f860555bf50ffac09d5f6a04ecc6729ebbd607d0adfafd1b",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}