{
  "manageEntity": {
    "action": "Save",
    "entityId": "174530810",
    "entityType": "Track",
    "nonce": "0x4ca63334108333ae848eed24bf9277d043bb7d240e7ed35fb38f5740545e2886",
    "signature": "0x2d2966cacd1fe697e0d4a52180bf70a093d0c9fc8618bb719ab76cbb4f558e505b8f59ed5068973ac47b4c91fb29ddb327f101bc22d88725f0c0525b42ffae141b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}