{
  "manageEntity": {
    "action": "Save",
    "entityId": "31932280",
    "entityType": "Track",
    "nonce": "0xb97d048ca8355f878efedda35fd2b416dee93ca54420f73aaf414aba82898701",
    "signature": "0xe3cf2289b7adfd0aa622b68d3fa8a17d9764a67be2f55e830d46c7fbabd2b6bf02fa648cb383b8fa97c741b0a1167ca2f65bc5cb804f3aade2677777fa0ec0e91b",
    "signer": "0x2CD314789C9583D12b6F54862F9E2cf505880Ad9",
    "userId": "354640"
  }
}