{
  "manageEntity": {
    "action": "Save",
    "entityId": "1039799607",
    "entityType": "Track",
    "nonce": "0x086d11369f7b6a1b0c100a357f75af1661d1709b496bf7d970add76b0169b8f3",
    "signature": "0xc0cfa751ced4e959039bd7920eb0de58f721dd7b6ac96e885e8f7ad439f164450bcbf11ac444448ad83add96b59856e6429e55e0c32a25718e28ef93408e6bcd1b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}