{
  "manageEntity": {
    "action": "Save",
    "entityId": "2049555726",
    "entityType": "Track",
    "nonce": "0xae384021908fe424e6bdfe836f47bb3f93126a1646574f3c3e50683d67e2f696",
    "signature": "0x17db628663375b2abbc679e8814719f78126c53893c67421ccb0dd7df68678b116b6da4ada59d8ab63c128a47044f17c39c424b2aaddf21481aeb11abd7d8a901c",
    "signer": "0x1080460F21DCc82D7160d2C77DaAb22a92c4dD22",
    "userId": "162106877"
  }
}