{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181749656",
    "entityType": "Track",
    "nonce": "0x16be94368cf5fcefdfcf60c0625e9f791c418fc66d21ee4af44f16e42a6853b6",
    "signature": "0x6465a2806bad7537e3aeb5832eea105e46cfe06c512736ac2316f5f60770c4012e244b06668d67fa8c2e00d28fd035d4f682b3dce4693358594c2bfa21fb4af61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}