{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116596",
    "entityType": "Track",
    "nonce": "0x45504cb0db8a21e6e541c4013f775b86d67e3646e3f22eaf0007e043d3d9e43b",
    "signature": "0x326df5c5dc57717e05a39bc566269b380dc6b417bf49f89ee1273d2e8094c16714b8cdd7f79bc03ecdc070876f661d7c9cff26078d7bb3fce9620a22852f087d1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}