{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080918947",
    "entityType": "Track",
    "nonce": "0x10ddcf5025ca0d65cfd2ff98893d7a9950b6283f1f49ebb61b09b71c84bd7376",
    "signature": "0xd666bf6cc5bffeb1a890c0e7fd17e9adb01ad6449812fc59bc5ca1942bf7b1750629f731bf013020f21f73662a8c8f10be5c287641a78bd3a02a04899a19604a1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}