{
  "manageEntity": {
    "action": "Save",
    "entityId": "1149593056",
    "entityType": "Track",
    "nonce": "0xb68aa7ffe84a384884d16521ea91efa8deea7451d37729cd9c963b91618244f6",
    "signature": "0x7068362877be34126a16bedc23095598c2d723ec2da3f257bd95b1931546be2c16bf7c3cc3e15909d92f9e6cdb94fe1f29d323208ded28ee2c87b53026106f951c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}