{
  "manageEntity": {
    "action": "Save",
    "entityId": "1712265579",
    "entityType": "Track",
    "nonce": "0xcabc8295eb7b3cc403e92abe1b7355b501838d70882035ac1ecc16cabc294705",
    "signature": "0xb4a092fff7501304256b983eac88796a571ef4cc6ca13c6ed530422764fde5df05fd6f6c3f7b0148fef1f02ff0dc8c6c2926f96d60dc6d3378bab424a9d2db9f1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}