{
  "manageEntity": {
    "action": "Save",
    "entityId": "130782752",
    "entityType": "Track",
    "nonce": "0xcf2becbff105965ba3c902e3eb3efb9932c3189526d86c1bf6a3f47b20ce3865",
    "signature": "0xa50f57d3700f1fd1e7aff9114add5e65644f83571c8d0b9be7e8763a734f96c61f1a77d6e1cb9db814a1cd4f78300c9872155932b98ed5418f322c3f7aaf8fdb1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}