{
  "manageEntity": {
    "action": "Save",
    "entityId": "1451554046",
    "entityType": "Track",
    "nonce": "0x055f14ae1188aff6dadd20bc0ea5f6c11e09c0e85afee12315469113512f3c85",
    "signature": "0x80a08f8d241f025e196c4b2fd5c51e8fb6a7f80874b758a6c53930467135bdf3678305b10d72c7f713e7110634d5398b1a34e9a10848602d4cc87df8477ec32e1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}