{
  "manageEntity": {
    "action": "Save",
    "entityId": "177997",
    "entityType": "Track",
    "nonce": "0x636105fe994ea8ec2d6c36eae7aa980757920f42496dd2372796e413a0f714b0",
    "signature": "0x13d57487fa408400e838b1de8d6efe1ab18d5912a4a257599d412f984f46939f780955955bd1c86d1be1e8b09f6267d88ab5ee0bda7ea81433133d2185469b831b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}