{
  "manageEntity": {
    "action": "Save",
    "entityId": "934801729",
    "entityType": "Track",
    "nonce": "0x3982c2661879451559ecc649f13373526d40f7ccebdea4caf340c0985f16792e",
    "signature": "0xb2429e237d4c55129bf8185d2ce7655216a11ae1b3046b90204f04e79c12a53f7cd47cda9120ba415beb2e6eaa55c8b07891b5b20f0f9f7bb8e9610b82b1f31a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}