{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086578",
    "entityType": "Track",
    "nonce": "0x00fbf24799ba33ab9b49a91f542f0fd8b1b166c8ac4d20c63d95f97a4592998e",
    "signature": "0xee55f12646d6bcf094097ddf5cb3b685b7469bdbf4b39aac0e28f0348a8da2996abc6872658b69c9d3c3a2ca6b96f1a3621bf1d26fdfba33243d937072bf64ef1b",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}