{
  "manageEntity": {
    "action": "Save",
    "entityId": "1834804570",
    "entityType": "Track",
    "nonce": "0x16065f1eb9ac1623ccf7c909fb5a698b42c653868158d58b0cb1c9d5b2f1d525",
    "signature": "0x700d76728fa927c53596deef78ff70f9354e08a8eaf076ae74938e8b9fc323ee53b389abfd43eb968567097e210ad31788ae34ed38c724bd6464a6b3f544cf251c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}