{
  "manageEntity": {
    "action": "Save",
    "entityId": "467570846",
    "entityType": "Track",
    "nonce": "0xdfcf16cd5a8b63b587246aa0dafe0402105d22b465b19917fed8ca46e9ea3728",
    "signature": "0xa265275c064a1e27a587c2b6c7e05dc6dbc528f99c545d374cdb47ab3c4dd7072946f162dc98105eec31a245b439e62a09713f54613fbdc639ab2db595515a681c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}