{
  "manageEntity": {
    "action": "Save",
    "entityId": "1109561471",
    "entityType": "Track",
    "nonce": "0x2317ecb88a68ac40511a849c98431dddbe0e2628b50fc33cfe4102f1a56708cb",
    "signature": "0x514c58ea8f4d85c730deba223d4bef50bfb1053c6bb8a6378053a169d1b37cf55aebe1a77ef2558bf1dd5a6f39c796e6060132144274ebb6b396a6a4fbf1974b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}