{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714477288",
    "entityType": "Track",
    "nonce": "0x247c7ae78bba44b04cac9af362ee10b676336e7485b31d384880e2e147a0fd6e",
    "signature": "0x4fd7516b2995a2cce8871477fe74466cc74933d303df330701258bc954efac8210fe1b42c630b4fc45dc78dc6ea17e4891ada47732a3da1944bb106ed224b7021c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}