{
  "manageEntity": {
    "action": "Save",
    "entityId": "1367304042",
    "entityType": "Track",
    "nonce": "0x80c2d19af7c5c29ce932fea943b7c342ce7dd0a4f63237692672382d4e7f9a0c",
    "signature": "0x9ca5403f33d8077a6557111d5495fb0434878dd03b2d3f7346d9794eaf7a39d616b5cbe36f1807ff8df778113741da12b9a13b21284a53c57fe23883a5b252331b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}