{
  "manageEntity": {
    "action": "Update",
    "entityId": "583500920",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc8ef9018607ef95d8e6ca4ac411d87cf1f97fdea4f9f55fa1551caec478b49d4",
    "signature": "0x2882289183a70fae01fd8bbb7cb7bb5b4203039bff90b61177020284ca43f127099cba08c9500fbf59cc7a4ccc211f59391676bfcf8db61abe4d6845334e06181b",
    "signer": "0x4379915D6BBCba4E61e1174A11BB24041aF0cb52",
    "userId": "583500920"
  }
}