{
  "manageEntity": {
    "action": "Update",
    "entityId": "729344507",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravndtamgzynfyfavu4ddsgewhjhcwpfxb62ms5hripoxnzmjokcbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":580550791}]}}}",
    "nonce": "0xc2303b438b184a0a5a59a053782d218ecf784daec287f849a3ce37b8f90e6228",
    "signature": "0x9debfc27f8600832f18cc3a5cca73701e66452ce36f86da1cb3708792e0b467d71761d16e3dd035da41a8236939d8971e065c9a2bf592f6a48c7ec2e74cacfe71c",
    "signer": "0x02e15765C61eDed8E41cC3ECE6C97dEE0F691c98",
    "userId": "729344507"
  }
}