{
  "manageEntity": {
    "action": "Save",
    "entityId": "224631160",
    "entityType": "Track",
    "nonce": "0x0c52f526142282abb05532eb14b16a2659ecc1cbbc83d1a3f8b178ee915e1904",
    "signature": "0x4ac8112fb0b73687a5bcf710b763c14ad1b9949629adf14c4079d12a665af5423eb2b46329f8a4493a9a1b53f5ba894df6772bd281110bf91c138de89fa678f61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}