{
  "manageEntity": {
    "action": "Save",
    "entityId": "1585043560",
    "entityType": "Track",
    "nonce": "0x3a4de9fe78e988b4f411f7ccd31844ccbc3f864f6e09c670bd9b9c4356d18730",
    "signature": "0xdf163d02ddf3fdde8cad02a538ca6d08c2165ba8658b7dada7cb7a24d015aa7a74e62a57f2003b856600faefd58287f78ecedcd757bf40f8dbff96420964901a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}