{
  "manageEntity": {
    "action": "Save",
    "entityId": "723111713",
    "entityType": "Track",
    "nonce": "0xd10e0e13592f113a89a058e0a1c5c8a049337b841dcd42cb2dff7a7e65fbd439",
    "signature": "0xda0472d1636e96fd43c52ac751045d301b5caeef006c012c2597a83413736e9713af24ba694426e2a6bdf9e036936b7a44376f430b051f01bc812822d534fa091b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}