{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825842499",
    "entityType": "Track",
    "nonce": "0xa7853ee8e50bdf6f800fdd69ffd8857f361ae5291111b686703c815a4563bbc3",
    "signature": "0x72c44fe6fec7d0306593b3be9715cabb4b4061aecf7852bc611cc7695e7d69fc11b84b31f32ba1d391e8ccc5a016defa092bc1cee86aa8a744dffac7f1ee110c1c",
    "signer": "0x3324C23609BC25902C39CFa38CF40581c7Bc7F87",
    "userId": "229134011"
  }
}