{
  "manageEntity": {
    "action": "Save",
    "entityId": "25697",
    "entityType": "Track",
    "nonce": "0xe274b64bc6066f2c6d666bde0c0cdfe08ece765984be22b161a78dae49e2ddd0",
    "signature": "0xa08f5e7783b40d573037b9a76b40c94df798c74446ea56686a66a75cf08581637b80a8c6611f809a76d146803b8ad68a124b007a1f565b7e74649a56ae508db01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}