{
  "manageEntity": {
    "action": "Save",
    "entityId": "994685",
    "entityType": "Track",
    "nonce": "0x20b586cf16acc805f3f3228ece0c17b284e2eba677b5c69be78642b24a88ffa3",
    "signature": "0x642b979222ed5c196f54c333b19bcc6c30240fe5590d8c3e30ad51c6ff634e3640c1470a39776d4c45339f88a58b1ef63c025ca0df000dc84d24585e1263bde71c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}