{
  "manageEntity": {
    "action": "Update",
    "entityId": "488993730",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb90ff0941be6bcd51064734a1df7372d23495cf8d61c7ec3231e0006e4ebbd75",
    "signature": "0x5023115cce3ac7bf8980ad50e07c548c1f69e1b881af02e0a24eb666e4f0a6f242ca5c32f293cd45d8b0b797685b540dcfd03f6c9fda4d30eaf64303364921cf1c",
    "signer": "0xFbfE539e9A45D0A6bdcc4b126a35a49cB2Cf8DA6",
    "userId": "488993730"
  }
}