{
  "manageEntity": {
    "action": "Save",
    "entityId": "1046315",
    "entityType": "Track",
    "nonce": "0x592120d528bb07262da64d95150f2f58c8d18f4e73ad56d8dbd1ebca1bbd551d",
    "signature": "0x16f8788f7ef6e0f3145be8da50d323a298e4d4d874b7df9fa3d5c043695a1b61312f8fee0cbe3a834488d27a0326c64cdbab6bb801663b4233eed34d534631e81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}