{
  "manageEntity": {
    "action": "Save",
    "entityId": "108049248",
    "entityType": "Track",
    "nonce": "0x9f39153930a713f8fd64279b946bf2bd11d78bdf5d9ba7c0523916e3e0a6723c",
    "signature": "0x639fb6488a87df4033fedee3dcdb5ba1b03dc4d7bff42f757cefabd225586d410bd0657c2f8f8537b6f40b06c1da4785dc8ed11749ac79d2c427d34334b61c5f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}