{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710791470",
    "entityType": "Track",
    "nonce": "0x91e91f609248fe68f68adaf7d555df0d9a8897b2a66528c650b26b18c610f2bf",
    "signature": "0xc913807d401d94dcf264ddc8aa9bef08e30d742d7de89d4a76038d2a03c5aadf305c3dc046ad49e3a4493610f37827666a3d8b3c1163f4d748fed96baca5bdeb1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}