{
  "manageEntity": {
    "action": "Save",
    "entityId": "1197185194",
    "entityType": "Track",
    "nonce": "0xafea544500b618dc56329da258eb1f39e19d90422736fe3ca050cc4f4e6995db",
    "signature": "0x7df86c24c0b31a8a233311b8604c201db476bf5efac4fe5100d560ecff4298751a3eae0255caff24b61e50e34db4f0f62e1528995ca2ccd90d32182b3f02e2e41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}