{
  "manageEntity": {
    "action": "Update",
    "entityId": "487342441",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8443d50490962dd4c1ab3873764cc0af3bc054a746797ddf1f7b261bb7a15cb5",
    "signature": "0xbac483e9cd917820570a1914fcb7057489c2aa5523dc38ba9692e5083418628071a3684ad92f62535c8158dd731d8ef03f9abd761b46e3fe3da848deecd0a3861c",
    "signer": "0xF6A82B34B4713Bf1d32BB94CC73A0acF37d4C822",
    "userId": "487342441"
  }
}