{
  "manageEntity": {
    "action": "Save",
    "entityId": "630365930",
    "entityType": "Track",
    "nonce": "0xa2eafd0a16e283f22fdea6f79f509cf79251d26221be7bfab079a685e362f787",
    "signature": "0xcede960fa3c216984460ee0b49837dfbb235adeb3c38e369de6edacdaa4590251c28f62f9a0f2c68fdef3f6dffa239ec999c0ae504723e7284ad3591aab62cc31b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}