{
  "manageEntity": {
    "action": "Save",
    "entityId": "1110906",
    "entityType": "Track",
    "nonce": "0xaf6c87fa69d77e2bb651ed9a2b97151ae117f83ff7bfe5aded439f39f21c5b05",
    "signature": "0x6c22cbad7edc746511fe432065bf3ecf407f782645b239b06c5566899b4926bd360fc454c4889945f4c55419a72830538f5145a3ff5c58a5101539f54d692e461b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}