{
  "manageEntity": {
    "action": "Save",
    "entityId": "927978671",
    "entityType": "Track",
    "nonce": "0x67fe85a0f21579b9e6e77bc2fa6702cdc206cf1b7b0c511111349a89ba3c9da7",
    "signature": "0xb3abc56b7b2aa55b7373b3195aab67caa628e741df0d69a5a1b4c6011c7d99204822d2e6010f48802dce23d9b74daa2ce3b42fb3588dae154163a017c4796edb1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}