{
  "manageEntity": {
    "action": "Save",
    "entityId": "950779",
    "entityType": "Track",
    "nonce": "0x198111e7235bce877082b2033aad2d3482365c4c7878d733adb461aaea2edc6c",
    "signature": "0x17c564663ff48aba3ab104077abfe61c0c9d1fab845f2288444c3a2691e0f4d833fdb0bafe49c9c10fec697917de7c9242fe24303ab3ff621d7673b5d37097c41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}