{
  "manageEntity": {
    "action": "Save",
    "entityId": "98241836",
    "entityType": "Track",
    "nonce": "0xa85728c62898b59a54196dfdbb7004e94b039ebc66c0061b2c5a01099c414bba",
    "signature": "0xccfdc8189dd3ec3b136a3484d5dedd6c4ce08c0629eecdc660e5867f27496b081b27a7ea5456eff7e85a924e7c8c026d72b647732f648d9606f195833c7b129d1c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}