{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098006364",
    "entityType": "Track",
    "nonce": "0x123b92d0c49f566cd9bdff5d7928483f592f3cc0c731fcd3651eee9ebf07977e",
    "signature": "0x648df846096666f6ffaa6b2dc6aec54d6f9f1715048c18dbf29c89d165895069345bad04b1dd5037fb47469e0c383d54f6d13de9b11131c7052f81d705e8cc4b1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}