{
  "manageEntity": {
    "action": "Save",
    "entityId": "313146",
    "entityType": "Track",
    "nonce": "0xbebb443242682c75e3957d144b7adfab9f6ef46033d9331f737f38277ec1d214",
    "signature": "0xc511a1c04c2f8008f1a9c598722f5b4d0b3c6e7e3dfcd1a128f2e9de344b5122361592921a4d331c25a94b4bde078c6fa9b1019cfbb7dbc373559a9c2f07b17c1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}