{
  "manageEntity": {
    "action": "Update",
    "entityId": "193183869",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0100c999d65318c1d72c49e898c0d557d731b172e5d9a5e0002da5e7965aba23",
    "signature": "0x9f78d468a46cc381d2e6a12619c9227d6867fba569f0f1830a20b305d66656a5008205eb750380c7b5bcd18062585665ade5024de7e6fb8ef55ff519614f082e1b",
    "signer": "0x67Fe4fFC36D5279f2821f811D2A7743c059aD10F",
    "userId": "193183869"
  }
}