{
  "manageEntity": {
    "action": "Save",
    "entityId": "1600023224",
    "entityType": "Track",
    "nonce": "0xf25b68b0141f63804d8640e89b8b6dbbc79ab285b1f7b6855fc8d3c2da11ef84",
    "signature": "0x24137f5c256257ce26525a2d822e56fde91f9a87b6a087a4086ae84770fb1c221ba3cea1e57f34cfefb892c6dd0faae99d20251dc1223abf4794bc3463c315e61b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}