{
  "manageEntity": {
    "action": "Save",
    "entityId": "95151055",
    "entityType": "Track",
    "nonce": "0xe7200438ff959c0d675a7a49a0ab73416e144735c919730db33f309bf27524e9",
    "signature": "0x23710e49ca0ca141a878a48fd2eefc7e9b8464b62fecd46f3b94c730cd141f540b545b90e45250e7f1be7fbddb91823587528298456a3fbce9a6362d06ef29b81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}