{
  "manageEntity": {
    "action": "Save",
    "entityId": "811162627",
    "entityType": "Track",
    "nonce": "0x9c955fef6eb5b10b01eb314ca24a0b4414d3157909e59e2482e00763b4b611ef",
    "signature": "0x57954b914cc3f42fb7140eb46ce0c08b1c9b5761703de2de6a5db736b2c2fd606af21bae73fa2c9ee4bd8f58a2c56277bed187fdb2c1475849446a769d561eef1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}