{
  "manageEntity": {
    "action": "Save",
    "entityId": "336252",
    "entityType": "Track",
    "nonce": "0xc1b91b12a6784eeca4cf431508729332d9f69abad7652f0c4e2c1438b76ac28b",
    "signature": "0x6c32278e8706f178ae4856523e6906b1ec455fdc23a99346d34946b28f80cd9d5c088670ef276496d7cc8dfa01bbc4edcea1d6cf4ce498a5e7e675df39a0070f1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}