{
  "manageEntity": {
    "action": "Save",
    "entityId": "2014762353",
    "entityType": "Track",
    "nonce": "0x823a20c9747757f1180f914169d956fc3362b7f09165f7ec2fc819921bc1b11e",
    "signature": "0x863580b98dcaf3e7675789bedff3f7445493be7c8cbe12bd501cdbf0302b3d252493a369f70fc93e98c712e3ac962756e39c7e76799105abe724963cd9e306e81c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}