{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825209037",
    "entityType": "Track",
    "nonce": "0x340e6ea7b3c121abfe99eed079f989ee7f5d86dabeffdd680a858dafc7a60702",
    "signature": "0xb01cfbdc337ae029efba7cf68a1e5335b51fc97d5ccf8660f9b7860c16e2532e24a45e6448a223f7aec51a45749f3593c52013c61c0730125179b51afd5b5eca1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}