{
  "manageEntity": {
    "action": "Save",
    "entityId": "1074175524",
    "entityType": "Track",
    "nonce": "0x2c0c10a0f8a8fc4492379eae15c261df2a0688466008b09a44e18dc5fccaa412",
    "signature": "0xeda6442172d274e80658afdc4a107fa5eab9c8439a313c24e118fd4975f7ec595449eb50c8a854b8fc4af28cc5937496c114242fc8538f0e9203e90c93d15a181b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}