{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455367097",
    "entityType": "Track",
    "nonce": "0x0082aee25c38a161176a51e341c447a325c63481a2737da7053205a390fbeadd",
    "signature": "0xac9edf2a5df2dbaffd02e4e51d6c32b4b4cd688ace8efdbf4b617832368ddf530720fc90dcc86ffca9282e8c9cb26c8c89bcf117aeea8547fba8f1d56baf38681b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}