{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0668bf38e930e1fe7fea1fb5b843db8b74b5774ac8fba610b85751a085043678",
    "signature": "0xb92057d7f037314bafef8b68c26a062a8239ebf78f6313801f1cfe40067ceb105c6522dc9cb422e8e4f243776235f636f14e2b04fb8b41369e8bff3c4a1966091c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}