{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761123724",
    "entityType": "Track",
    "nonce": "0x54af80b52ae60e6404cdd63c4d0e067fcaf0c718469677bd4637b096b05480aa",
    "signature": "0x7fff1147e90a495de96b9ee305d2ae13aecbff3a5998c2bcceb5bbfc23ef7d4c55d62aa13a55cc196ea1c9a91129aaf1ab36a19d1c630dc403e20bcdccf22ef91c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}