{
  "manageEntity": {
    "action": "Save",
    "entityId": "1631541357",
    "entityType": "Track",
    "nonce": "0x6be2217bfb598d6217d2a21bb1b041d1770bee24920e21a9a141fa2480237ff6",
    "signature": "0x880b5a13076db3e43fe60ce1e04603a0c8d30c7afecf10282e52b8427850a84332ebeee28bbe36d22e68c652ffd031cb38a8acb373295f410db30b75ff2eb9f01b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}