{
  "manageEntity": {
    "action": "Save",
    "entityId": "630960",
    "entityType": "Track",
    "nonce": "0x695825f3c42944683ea4fdd33f7a4c3c80832e4ad868d33e714c04cbe69481d6",
    "signature": "0xde76852b6305628ac9ed43bb5bc806f69e5eb7add99ba225e5b42997887b7f2751f508d6578bf7b559edf6769ce5b189dd86a9b3451d69a67f046da92f98ef051c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}