{
  "manageEntity": {
    "action": "Save",
    "entityId": "266229545",
    "entityType": "Track",
    "nonce": "0x00f22de96896f4146073809df0f960ddce59dc92919f18dab83b266d8ff5391d",
    "signature": "0xa2dbf92344df03e158a521856be5aae85b8101b76c2d1ade273cc83ac0e891974cbbff66ce01262416894d7d74f2a91aeb1a384ca16d0f64249214acfa4898021c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}