{
  "manageEntity": {
    "action": "Update",
    "entityId": "428386240",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x697f95f411e9466bab0ea9e13493f9bd5131ff1961b70d9b22ce3fde762c6e6c",
    "signature": "0x7d9899d6342607e9bf681395db0ad3930ceb9d81cd2be25903b65458f34ba7aa1774a171ad71017de20adf6cdb36590b472d0095e6021cbde15aec08ec2d24631c",
    "signer": "0x1E2C4aDe69BDE80BBC3cB44d8d289A059bcF1A7e",
    "userId": "428386240"
  }
}