{
  "manageEntity": {
    "action": "Update",
    "entityId": "312556877",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x88d111ce07387efa636cc7a6d8a7c0ce460070d9d0188276e41476c277357213",
    "signature": "0xa1e8896923cc5110a8dc97c0ecc1103ac5624009adbaf97dcc874507aca4d5891857d0986ece42893b0c9ba2ff76bb71a6e829861dab1cce35b4eaafb775ae481b",
    "signer": "0x1C65823c662e6d912ae948e3971B727550397651",
    "userId": "312556877"
  }
}