{
  "manageEntity": {
    "action": "Save",
    "entityId": "833184357",
    "entityType": "Track",
    "nonce": "0xe11eba4a5b5de83809cba5dd4f8bd92343c44ab47407c578f22c9866df4d63c5",
    "signature": "0xba05052b553b4f9c0e93c7826d8de6439d0b441eb39a0dcbdae0731e7caeb0d56caf9599aba6aca3479de0be81a7ec595eaccf335299d2caf81412dc61ffe0fa1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}