{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096741993",
    "entityType": "Track",
    "nonce": "0xd7c90f2a238a3595741c5769a6dece3ba87068a9838d182a80c4aad189fc555d",
    "signature": "0x536609fa6abbee4ca0cb5a675edba8feb25945387bddda58030d5f4a4933719d274c7a934ade6199847d80df351305ad9e5a0fba27dcfdf5da2de9380f0374a21b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}