{
  "manageEntity": {
    "action": "Save",
    "entityId": "1801930125",
    "entityType": "Track",
    "nonce": "0x2c0d4e510b4e85d7e5272f33336725c4b532b747816add0fee77952b6692f168",
    "signature": "0x32f7eadd4a1af819e649ae5431e99e816d2374b7602777c9675ba479d00cc9086bfc7ae65caa3d6a003398f390834ab1693a1789f4c41c38321611fe5daf4ebc1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}