{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710930064",
    "entityType": "Track",
    "nonce": "0x824237d22228d2dbbd1cd04fd89f8c38a3ca4d9933587528c448afd5ad61d46d",
    "signature": "0x92cbbf36938b68f11069cbfb3e7d5db6a3f61c68087ae138bbeb6b79b61859b9099e0e0ebd02a29483f4ee65b83cd9e5495dd970df62d5f2218126aceebe82ed1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}