{
  "manageEntity": {
    "action": "Save",
    "entityId": "174155918",
    "entityType": "Track",
    "nonce": "0x111e8ff18eeef1c355e6fb13dcc395aa7310d0239a8b240768fb31e08aa414d2",
    "signature": "0x571a602ab58afcc05571be31811aaa5751f5a5b37eb2a1f1dd8b861d79ee50cb6469caf9977135d1f3ef1c309a3dadb8ff491065a151fd110868cedb4edd77ab1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}