{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055309",
    "entityType": "Track",
    "nonce": "0xa6fb37ac34784c24b3067f03d6bca49f61ce7fcae0bd7a38a68e0bc2d9061ecb",
    "signature": "0xd32b1430b69d410a743f8414f100eb10761c515408ca6f1d30f37872870111803a8f8d723e2189579d04a2514525577d7f1e57ddb667beb8dfb03c45a603e7ae1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}