{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790666177",
    "entityType": "Track",
    "nonce": "0x2957f64798ec2cb6e06da59390f86170e7668aaaf0f8d08ec56c169af5201e81",
    "signature": "0x2d08daf59ef51d260375781fa6a965aa94a13c8a4eb7fcaaefb45631b48e94876859746be929ef0281801bc56c072e720f370b8b047ebf81a92854b3ef5f96781c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}