{
  "manageEntity": {
    "action": "Save",
    "entityId": "1093694",
    "entityType": "Track",
    "nonce": "0x1358f304067ce229e5c182ba7648cb324e67690b21c5542c73d1e7d8ad1d3c59",
    "signature": "0xdbc020b1c45e7fc4aace6d245dbe60326c933a114be4e6d1b23104a9978ad5521be0ce41411faca074501bdebfff1ce6efc9be620ad393dcfe9a0de5243b2d881b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}