{
  "manageEntity": {
    "action": "Save",
    "entityId": "992340192",
    "entityType": "Track",
    "nonce": "0x68e3cb17c26d691096c4274fb4bd57a829d2ed98ae4627e08530e7e24ea89392",
    "signature": "0x84bf4c8422ead578e6263834a4f8a1205d5fc1d80771744605242351358f4b5742fe864cfb54d2f5ae22bee61a353b26da28ac83234651b773041810271f74df1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}