{
  "manageEntity": {
    "action": "Save",
    "entityId": "696542",
    "entityType": "Track",
    "nonce": "0x4a19565509e146cfdab4b67096fffb3a7d6ee1a9347c7d526edf7f38561be1b0",
    "signature": "0x4cd99a8d06c091e3fe4659c30c1183ff784e634b3ec16956206f25d2691607985afbeae7c4ce55ada876bf13bb3e5ec2719319ab40354700581a8f5747958fa91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}