{
  "manageEntity": {
    "action": "Save",
    "entityId": "1267988200",
    "entityType": "Track",
    "nonce": "0x71cb8448e3b574caeb8dbc09fabf625218cce58cbd0d5cb5e42b78f20f8ec6d5",
    "signature": "0x7c23c25c17eaf00ec0789409ffa3eca1196652eb1cdb30513cad70b59f0fa43b273c7965b6a6acc8af983d09fd4c112c92c2fb5bc09d7cbaa833ca92ab2ced271c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}