{
  "manageEntity": {
    "action": "Update",
    "entityId": "450772943",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe6256925e786ab900d4518e20d33d5cf3c7e14d44a61011d715378b086c09444",
    "signature": "0xb9c341213912aa7e59994a7be73c04ac6f4544412809a4172ef30c1682241c571393a62e1bc2a0640f147738e4155d140ad85a9eb9fb66262bca3eb9cc24034f1b",
    "signer": "0xdA4565Aff71E89bd0dD0a76470E7c3B53bDf979d",
    "userId": "450772943"
  }
}