{
  "manageEntity": {
    "action": "Save",
    "entityId": "1712663491",
    "entityType": "Track",
    "nonce": "0xb65b8f9a251b8d30b398be98aa53de192039622110767e35dd5a9154449985fe",
    "signature": "0x275143ec0ea6a9e6648a90b783a6e496cd86131686be40a0bb7986f6a929e74461b8d2a63f8250a7cf91fabae0fb7560364102d632df489e2d02aa92b27d76e41b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}