{
  "manageEntity": {
    "action": "Save",
    "entityId": "658195",
    "entityType": "Track",
    "nonce": "0x1e85e056370c1d14de5e6cf9eaaf3649a64ec384b1a3db0af3b62cd3f6fdf1b7",
    "signature": "0x342eddfa17cac3b124222a7ad997c4c7506679630a2328788b5c52e464e5d60b5bfefe4c703edb432133a3ef6138021feaee30cbd149e5f1e0fd95c30b6515f21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}