{
  "manageEntity": {
    "action": "Save",
    "entityId": "2045792777",
    "entityType": "Track",
    "nonce": "0x4c667cc17a6bdfc4c18f0827f491664cdec20cb84f5a02711c576a6756ad1650",
    "signature": "0x3f6186155b2dc52ba7aff51bf3ee58dea3ac68f37395c1c2c426f171325ed00c23808d67c8a246a13bcfa724f6c8c481aad0c9005d8d4a630405436ff590782a1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}