{
  "manageEntity": {
    "action": "Save",
    "entityId": "103297",
    "entityType": "Track",
    "nonce": "0xfe4a5d44551341ba3bb60b7a509090b361183c6e5cf63dbe4e92db369a6401ce",
    "signature": "0x4ee38402d09dd1f89b4b2b936ceae5176aa6629a4c53dff0beecc1e76a2ae4900d1ab42c9c61ede618ab325f2032309be55caef9de516a1c054f4a0e3c7db0511c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}