{
  "manageEntity": {
    "action": "Save",
    "entityId": "467941934",
    "entityType": "Track",
    "nonce": "0x0f9e294cd15ba55cfb60ff0211f2917e221b6610de2fa683598fcf6a33e4bdff",
    "signature": "0x4815a154645c151c15465fb3ed7ffd5424a10fd9b9a3dd7a65caa374485ba7ac773f10d9d4017739469574c950a3989fd94eb8f742358470a57b41a4ab9e9a5e1b",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}