{
  "manageEntity": {
    "action": "Save",
    "entityId": "1715409512",
    "entityType": "Track",
    "nonce": "0xe67687f76aa495382a299238a5c89e8fa65d93a240596e2b895c8df7596dc437",
    "signature": "0xc76dcdfb10fe8432fc5026e64b09e33d6621a83c713c615e0471e958efa491f62417d62141d81ccf18cac19848e6bb295ab2cc7b2f9ff7eb17f62dec18553fdc1c",
    "signer": "0x2B28feb1CA15953a5a910C4E741698a24e8b3FE9",
    "userId": "887020893"
  }
}