{
  "manageEntity": {
    "action": "Save",
    "entityId": "1736985351",
    "entityType": "Track",
    "nonce": "0xdb0fd83b29aa061c3ef33e77f9fabbe2b66f8705d296ca029e909c94b18e991c",
    "signature": "0x23e81b06d49a94975fffa8f0308dac6769fd44f8233ca8ddbe07139b63bf6fad05eb0705f17e3c3d81b618b3983b243abbc84c81c34f6ab5b80c52dd67218a791b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}