{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64cb126f95248ed9551189ea2b535a60932e794f44115cba3197a171ae14711e",
    "signature": "0x016cf481df7ca73b5a9423812a913cba2fc303c3833a7fd0fe8404411da9a08f2fb5727ffd9e444377d4212b6bdca866442e35a5e94db5100cc537cf2bd99ddd1c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}