{
  "manageEntity": {
    "action": "Save",
    "entityId": "834724711",
    "entityType": "Track",
    "nonce": "0xc342650ad7ca39545655c3117f0cc74a04ef71b2b0bd9c2757a721932eb4451c",
    "signature": "0x07fa00d9b0fd117b4214ecff2b045b696c1b9de0ba8af4cb8739bcbeca4396f56c09a53e702bfc56959eee93b617bf48183b30aca8052933e12e0d428730d7e51b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}