{
  "manageEntity": {
    "action": "Save",
    "entityId": "262351496",
    "entityType": "Track",
    "nonce": "0xe595a6a2800a2057d61c344df7e9444e3fdf4d4bfc4a9c61249630e8f2b40dca",
    "signature": "0x36c24ad0376261e9ce1ab414dd5090f28eaee49be35fdc1a7da0192a099920ba779566fdbc8fcbdec69cfb3d9c1910b0279e565485bddf585d73a49781c675c51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}