{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060695759",
    "entityType": "Track",
    "nonce": "0xb0fffd211abf04d5e5169021ffbcfdafb25e83288875e08fb37a906181480259",
    "signature": "0xd1c39551bfde7636b2debeb3b24d39539f4dc835f7c2c9c37415718901f924924e97b1a2d1ac05ce97293712203a251e7061b3994364ebe903b0699ef885b33a1c",
    "signer": "0xE4cD33CA403714dEEc032635D51d9D3345c225d2",
    "userId": "967323686"
  }
}