{
  "manageEntity": {
    "action": "Save",
    "entityId": "1765074940",
    "entityType": "Track",
    "nonce": "0x4705db725374c6c7ca4abbab75ba0bafc0f280f66fc2bb56eed108455e35425a",
    "signature": "0x1509709b494fdeaecc117e1093caceecd22c6d9205ac65b44a6016fbeb3afe6177c2f3bbdef993281732a35813d7e752e311f862ad2aa74a1e6f9620a6e0afde1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}