{
  "manageEntity": {
    "action": "Save",
    "entityId": "2022964431",
    "entityType": "Track",
    "nonce": "0xfe81d729cf42aff8c9c128f2532754906d57a5ce8f094f446e91c180c96ba6d3",
    "signature": "0xc250aee106aee4a74756d12e6200e1ad38629d450c65ddfeae7b04e70265252f0a7e96bab7f650c14ecbd61a47f4b3e4338c7b15ad2c09b8b977d563caaf3d941b",
    "signer": "0x2F22Cdd715D3b8F3758671f06b8B495380098f0A",
    "userId": "442858099"
  }
}