{
  "manageEntity": {
    "action": "Save",
    "entityId": "828430462",
    "entityType": "Track",
    "nonce": "0xa083d0324972bf9418bfec7c831bd1b8c8c1c21fc1af86805b4a6fa1805e1401",
    "signature": "0x3fdfb6b6fe89c2b47f33efd4f065518f71b77511c1daac817dfd1121b20908dd2e6b168df5b5b4b9f8b25a05e39a5e596ef541130615e8d3ea64055a970e22e51b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}