{
  "manageEntity": {
    "action": "Save",
    "entityId": "1096105",
    "entityType": "Track",
    "nonce": "0x31bb323c40fa8442c13ccedd7042ccf96fefe41cd60392e48dab8b90faba8f7b",
    "signature": "0x607685d81cbf74cb9d2d5a48743f1a8ea895c5dabc60eb67fd04e47e0101e8774fb8cc037fa463d42d953be80bb4986a9c7405318f3a98e7931fb32c66f8e9f91b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}