{
  "manageEntity": {
    "action": "Save",
    "entityId": "63633",
    "entityType": "Track",
    "nonce": "0x6b26ed820f1767d19c908a326be754708264729b7ff6ef5505c28b46d343cdd0",
    "signature": "0xaee7adf0965bda7ffd3e84f0b921837512b6e73aa95c5cf5386224a5ba087f3777a79304ff1888e46a24194a68314f3277f0c1893c1bb6c99060833fc2281c871b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}