{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761499538",
    "entityType": "Track",
    "nonce": "0xfbf33f1a711d832d93a6b7b27fc7f22d4eb81daf3689e13cb434344729cdca05",
    "signature": "0xbd034d48290dd2dbdcfe707f05517f9344e2c2c3c00144dcd3da99e53fc5c9ed08151e5400b46ad8d2f9eb5614b6e42b486f806f80ae5fb5c24d6644d26912041b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}