{
  "manageEntity": {
    "action": "Save",
    "entityId": "940632904",
    "entityType": "Track",
    "nonce": "0x360034afa4264cd036fc8f06ecde905a4bd50f107633b0b2819c5476b765b56d",
    "signature": "0xb770b31a2a2b8c7d40bfd4e71ed21307017f17d0240be5f6213ffaf60a9175872c76b8a0cc918decba0a71594f5b9e64b3478c00b36ff0824b24af11a8ddcc111b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}