{
  "manageEntity": {
    "action": "Save",
    "entityId": "994658785",
    "entityType": "Track",
    "nonce": "0x31dde56ee437527548294bc6ba53060ac24c6071d237136fb92ac24b393b9339",
    "signature": "0x7a6cfb834199bc462dd51177c2fb1bc87386f24e416505d64fd9765b37fec36d4899ed919f5a6df5ddf3a2f86b50c4cb4639f19d48c9953af66060af878eb7201b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}