{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171970489",
    "entityType": "Track",
    "nonce": "0x78119958d9e39d876c3d28ba660f689e398212ca692f0b70771399be2acc69b9",
    "signature": "0x40a628b2e57aadc799c93896260bd06e4f468ff3696ba7398801e0e69a83809b239757888a2a048b9b810eae17521feaaeb4edca5133457aa7e799005ffe73a21b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}