{
  "manageEntity": {
    "action": "Save",
    "entityId": "1576771563",
    "entityType": "Track",
    "nonce": "0x5f192b7f1b01f2539ec6c3be56ed1753197095cbaab5107dbaf1eb94360b2756",
    "signature": "0xde96aa078995f1591733ad0146223fa73b5d7d072f01e1f2f34c373b65f101c2197b7c303c6dea1e109dfd1dc101b2c65436fead9ae1af66537b7c61c297ea3f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}