{
  "manageEntity": {
    "action": "Save",
    "entityId": "1023748237",
    "entityType": "Track",
    "nonce": "0x03a93d8c805dfc0d8f0a7440ff64e4a46c2a585064b49db0fa1e235d51e96b8b",
    "signature": "0x0fd02ceae3d43a55969192c515734c9c2f1ce5e3d2b9eb2a90030bff4c6190012c782a03d07128db181b2cdbbf7e33601a276f280f4ac5e8d224c29f9924d9da1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}