{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063180891",
    "entityType": "Track",
    "nonce": "0xd0ca9dfc6232985a3bd409648b2aea083a04d6b3d09622ec8f3b666d3888e72e",
    "signature": "0xca765857b3c8fa15665f42b298c24e065ff66bc8225b82f46ee3399930d05ffd7cc3aa085840104ff7b41c4596e11951ef8b0531080b0f5034329c34b22827b21c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}