{
  "manageEntity": {
    "action": "Update",
    "entityId": "307479286",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x25a4532f2e59c68cf1add14ddb1e240299cb275f673fed15f51971b4ba885639",
    "signature": "0x90236c819e40f78e96eafe50b5ec44c1702a31fd261961ab0aaff9e5eb0c03aa01fdb48ab8301753d6371b9304c76820e1597b9ea3aa33e957eef377e1fe17a21b",
    "signer": "0x600ab5340CbcEdF27914F7784164758a7e1eaBF0",
    "userId": "307479286"
  }
}