{
  "manageEntity": {
    "action": "Save",
    "entityId": "231053869",
    "entityType": "Track",
    "nonce": "0xd165c47336e54189027ac5b3bfcd14d3a89605852e484c0e8c1af75c0e2ac70b",
    "signature": "0x186dfb63b2dca622339a81a28638c07932fe6d71f9fe17527517cdbe84ff532051437fc307d486b7da667db7066aede4a1aabe07295c450ff90ddbd4eed0349f1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}