{
  "manageEntity": {
    "action": "Save",
    "entityId": "1767187519",
    "entityType": "Track",
    "nonce": "0x6beabd221edbb557e68e24a9fd92624172b7dea3747ac0b8b323143ef59d02bc",
    "signature": "0xf09f92a48bc543f0270ac47402a0125299262579165c1c9eb293eb0f0cb2f8a8135983cf93aae99e146b23322ee48809af85f505891eed02675ec7c0f5d0a0821c",
    "signer": "0x7CED204471059c0d1eD2432322D405F8EA79D93c",
    "userId": "310188863"
  }
}