{
  "manageEntity": {
    "action": "Update",
    "entityId": "903623679",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd7d4c1b67eb11d1508bf3484beeb76b59695e6c1f70ebca17eb54094d9e58db2",
    "signature": "0x68cae1eaf49a34b7a5438d622da4de60e8215a44e8f1bf5e497f87ce45ec986e7bc27d2c2b03b5ef41b70480b823f02400de3697ed7f23db673b10428e1c2ec21b",
    "signer": "0xaD2943cf8b72499A607824F1f47422500Af21895",
    "userId": "903623679"
  }
}