{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x480f533ca1948c2469edf7458061d227daba8390d6e18f0c7b538770fd0adc93",
    "signature": "0x39a931f17a66b862353e85724a61e2e4252796eac66b90f0ec17f6119e0839d11d302f6d34b081f9c8d1059d152083d6bbef721983fd3b51eb4c0cf63433a4821c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}