{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027648494",
    "entityType": "Track",
    "nonce": "0x011bd5b99e868e54b95b18828689d56948b366e6c4ae7a194dfee89c084d3992",
    "signature": "0xc99dad0920ff2163acac22682be0ec79a7d38abfcd0496d4bf66db51335c745f66c7544414cbb8ef0fbc9504bd26538e916d4747942d8b59a2fdf4c3bcc242f41c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}