{
  "manageEntity": {
    "action": "Save",
    "entityId": "1734210764",
    "entityType": "Track",
    "nonce": "0x4caa9fb6ad070b4315413523e64a6e5dd57a1cb7654d81b349d4bddc2ce4d56d",
    "signature": "0x3df61e286a58a5387a9b8bcc7d4d6cb5bd4f67dd0084a195ddde24297689cd83760928a8aeac8ecae2aaf46fbbb643e555464adcbfe6e4164777621cd6fe4aec1c",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}