{
  "manageEntity": {
    "action": "Update",
    "entityId": "533673360",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd727f41a4fab81af48513b73820ad595c188806d0f04018e6ea38a9845de0c5c",
    "signature": "0xf5e0655993b0c85c732504b99a1b93659cc3cbbc9834373e7168caa07dff1e7f1f7a1de6b2eb04a74e846a173e6d6489790e89f18937d926c05c528f59c640531c",
    "signer": "0xC4e201BEaDD3933E76e562c99f9F367Ced3f68d7",
    "userId": "533673360"
  }
}