{
  "manageEntity": {
    "action": "Save",
    "entityId": "160292715",
    "entityType": "Track",
    "nonce": "0x37020220777b0df064ac930cb28f578100aa84bea2507050084f54decf71e4a8",
    "signature": "0xb99a7d3b8f24cd2f0840afd2806142383abb6f709c024cb430249a9ede1705962ae7fb2b33c0a4a7b8ac16dd263a6192e68ec15fbc2a26a45329d6616ce5459d1c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}