{
  "manageEntity": {
    "action": "Save",
    "entityId": "236385",
    "entityType": "Track",
    "nonce": "0xbfbbed1e3fa04b355c4c4161f6db00c28e480f7b6a9e2e7faec631eba3731488",
    "signature": "0x3e16816bd7b951893d48d708608734dfc17e876068ae1596ed106cd39ca7612c60181ab3a3635cc3409813a175d46e6e768e637184c7e6552c32c0cdf63ed7f41c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}