{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102779211",
    "entityType": "Track",
    "nonce": "0xdc1cfba15fa72148b99f193019e5ec129db72f561d35a8fa4536701bea84351d",
    "signature": "0xa75a5d90d97f4a74e74f14ebd09780454ae6e5285336f027db35b0e6efa737a37d32ded8d330808c22fd7edbb55c170916cdfbb4fa811f124da7eed0dd9c59b21c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}