{
  "manageEntity": {
    "action": "Save",
    "entityId": "1126591142",
    "entityType": "Track",
    "nonce": "0x48dadfe39e7d3dcb91e02acab2facb70c0e850bc81651f3aa35978ce488e1f17",
    "signature": "0x164f41aebe2849ed80eb4857b2b8db1e443da322aa6aafb278e189716c17c5e26b2566e80b79b45c2aeeb1cd05c9909c16eabba943c7f1855b0587a4c886bb7f1b",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}