{
  "manageEntity": {
    "action": "Save",
    "entityId": "2028381294",
    "entityType": "Track",
    "nonce": "0x0e58ea493f2a5827d7c342c5fd2c22bcb93cc607a0de5adb963c663e58092150",
    "signature": "0x7def9d5b50b1d7e5145b8c7d1f35150ddfa28f551d2fb08cad303c20e97551416c1bfc025a0db7934d742f2ff7de730023e66bde2be99c1adb36cead8b7fe9191b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}