{
  "manageEntity": {
    "action": "Save",
    "entityId": "318092",
    "entityType": "Track",
    "nonce": "0x1a4930332ddf8fa33e3e47fa4e14990f329833cc4c92511ff8279768d1e77313",
    "signature": "0x3311cf6a1d9337cb64ed64093f678fdf69952f09c20e7f4f79858163c343053a271fef09c17752766e8d2730b526a8ab5125a1654da994bdccd60d7d7760c5ab1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}