{
  "manageEntity": {
    "action": "Save",
    "entityId": "955935991",
    "entityType": "Track",
    "nonce": "0x080f33e53e3afb7143301029d854626a49bbc0317a9beb3cf7e79ac5243fcdb0",
    "signature": "0xaeb6c6b7d3545631d827d9576982a3acffee014b071b18550da32da32e90fdc156cd6b1232e9949a36879920a2a69a407ba33c9429ef4f64dfc35295e79ba1741b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}