{
  "manageEntity": {
    "action": "Save",
    "entityId": "2079672238",
    "entityType": "Track",
    "nonce": "0xb212818713d3cb6b61c850b08291e9f2485e3be0562823d39cad27dcd9e90124",
    "signature": "0xbab0fd33e6a629b135143016c952d9ec7e2955cb569340815c8e286a9b26035e712f5cfd015eb2fb8cffe0d07f07dee96c31556ec30592537c63862cf29609d81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}