{
  "manageEntity": {
    "action": "Save",
    "entityId": "1773970882",
    "entityType": "Track",
    "nonce": "0xc55de3735d0e80fe5f31d9854ed30f29d633436894bcc8dcd4dd43f0f00e060d",
    "signature": "0x24a009e0406c1721f03c02137bd7a2bc1e2c5aa245873623d2117c672ceae4107bf214f491dedf36660100fd0e8aee19bb876c7e3d1a8300d032b9a3b5a2ace21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}