{
  "manageEntity": {
    "action": "Save",
    "entityId": "1101280800",
    "entityType": "Track",
    "nonce": "0xdf4db55bcc1f9cf6fc241b0d3e49c374fd3198efe0c00cc08d9cc028f5f2d8f4",
    "signature": "0x852f76cc338594919f7e6b6326e1cde2018dfd1f9ead948dcfc535ee6a96066860ada8b72c81ced3dae27bc1e2c3dcee3485b3a766018674a546cd14b72cf3361c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}