{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174647239",
    "entityType": "Track",
    "nonce": "0x311320d59dfa884461be321371af1e94f47e3b527232b44bfea716e46d81a12e",
    "signature": "0x45c6ecb726d4386e79c78dd13132b00a334de0ea934adfa9a9f52bc1d7f2aa1b1fa538e7901acfab30aea717dbdf37de18ef53ccfb08b988e2f4ed82cf06b4b81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}