{
  "manageEntity": {
    "action": "Save",
    "entityId": "162732327",
    "entityType": "Track",
    "nonce": "0x8aff9cdb32eb727035ff9820094c6af97555985295e3380bafb4b49ebc8571ff",
    "signature": "0xac91928fb92cd5a943d0cef813b21fe2d2ca984c5e653991cb1507328b635e972876383b6aa99e7091c49a60725bc74b6d52d9e680c0574574c2213be00be0ae1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}