{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029362905",
    "entityType": "Track",
    "nonce": "0x40aa649553433265570a23bdd25c826a284d4656302f021a533c48c3d2b8182d",
    "signature": "0xc254d3ed5a930738e8852b7922cacd153a1dfe2067e64d3021c1ad9de44730997e93b6b56be9ff9e5944349c43a1eefdcb80ffc9d378789ae924f107806ebc4b1c",
    "signer": "0x71114Ff581aA73d1F4b6429D7713914f10e8e90B",
    "userId": "894513731"
  }
}