{
  "manageEntity": {
    "action": "Save",
    "entityId": "586105",
    "entityType": "Track",
    "nonce": "0xde19faac13baab8aed973ebd898258b47dc512f1616c14ad5ffe2464d882bb64",
    "signature": "0x1055a1d864600398b68b77fcc05c522d0bdd07c1f32de05d2b5f15fd97ca601604ddcd930976135ec8ae4ed076295a938eb75b4868ed1046b23ec37ecf00a1d61b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}