{
  "manageEntity": {
    "action": "Save",
    "entityId": "1717915355",
    "entityType": "Track",
    "nonce": "0xdf3451f20fc85026c8f951b6804a5fb87743ece2771ecf824bf8744dee18813e",
    "signature": "0x71c9ec913cc6c9fd3aac8da4079c0b0fb0f2398f3f8aa4e3278d1647f3958802263b3f886302313fe23d3903bbb164111cb229c4a3cb065ce0f6270a1ed10b491b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}