{
  "manageEntity": {
    "action": "Save",
    "entityId": "2068730320",
    "entityType": "Track",
    "nonce": "0xe2cf5f0a4506cfb8f24f9323a65f0ed794e7caaede06b33fb61d50c81a133c21",
    "signature": "0x5842d4f49b1eea69b2adb8bee0b91ca870c5c9b1747cb50ee20aa3ceca137965088e287cbb66dd98c996283c06cbc038f3b94c06b766dad845387d77c436b9cd1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}