{
  "manageEntity": {
    "action": "Save",
    "entityId": "712294",
    "entityType": "Track",
    "nonce": "0x61a0ab193c947c9b3dcfe4ff7ba286d5ce32f4a77591a5902f523d01494d03af",
    "signature": "0xfd4bc8289c2e78d53f89f4ed75cf6cefa51d4b5088542e001e236be3ef113d2473fa76bb833e53cfaae2c0e00b228f87a3664628db08f69ef53cc131296f38c61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}