{
  "manageEntity": {
    "action": "Save",
    "entityId": "1829927636",
    "entityType": "Track",
    "nonce": "0xf0922c3d71dfb5ff06f34e6398e2bd478a9a2aa35a0192b326cc5fe0cab24888",
    "signature": "0xc3ccb23006ac262f68ab6cf04aff8d615b91bfd31730c8eb19a85860fa48987d72da1b19aadd5fac6f71161b57d20e84f6132aab297a843c19a576fd049d1e061c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}