{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176818672",
    "entityType": "Track",
    "nonce": "0x4e9f3233738e734e0709d7b384fb20c67af44ab522cfa5cc24e1b0616800cd67",
    "signature": "0x86e39cbd77ee05aba4cce03fde3e1900cdfcc473b92d7fd5fc9bd7f1b289e88522a4b29318ff8eb500c66fe09d832971c37fddffc28fe23986e2368fc39e74121b",
    "signer": "0x48a006fC89FEf065AAB7A5769519625870833CC6",
    "userId": "128172"
  }
}