{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059505",
    "entityType": "Track",
    "nonce": "0x2da3051d5225f057df44a2de996f5ca125f2e95e3e9b0a3692a9add10d528340",
    "signature": "0x36fa7dc28cd49320124eadddf4947e663f5f2c2a5f28fadbebbc5d6591b9043a6d3d0694fd12cf467e55a1453e3e23eb85e3faa81d6de6633ec7ece6318468e71b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}