{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085125912",
    "entityType": "Track",
    "nonce": "0xefeb28928f3dc52717e7b26d4282d2ee63b42eac52d1e37ff3b7e940b044b774",
    "signature": "0x8b87200c1bba24bd4177a2c2ff93a6d971ef321cf67460ca89daecc3e16c41bd4f1a60e4af248a3ff5cf67ea9335a4c61a16e24c780943ade3037835697257e91c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}