{
  "manageEntity": {
    "action": "Save",
    "entityId": "2125197170",
    "entityType": "Track",
    "nonce": "0xa91ef0f22118bf9fbfbacfa551ac78e44c87d51a17851fca581c285d6e18646d",
    "signature": "0x94bd9540a035d19d3cba31b662f58ab917b14955ecd488dfcbc380ddaa88c19128088ee86222d01891e96918b380434a677f28a41fa82b87b447a7edba693d8b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}