{
  "manageEntity": {
    "action": "Save",
    "entityId": "116762315",
    "entityType": "Track",
    "nonce": "0xf1927fce2b97c398bcc655bb3ff2354fc56951865e48907e3e3710c431feac5f",
    "signature": "0x18f95e5f0da4284b44cc1ac3aa85f1c7dcae83ba82161c71ed06a4c4997181b36d616480e04f25cbdddaff9d3442d3b4a196c72915e3714007ace6b2398eead01c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}