{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe323fd34dadca9d31af6e3092337d1915ee2cac1cbfd680bb89aa32659378520",
    "signature": "0xa3d18e822b0db7a7e2d0ff89fab1d5910bfdfe2083f9a7ed1f35b720f85a3c727bee5b9ed3f52f617d775263407ffed772376c32c44bbcce125c2be60a93411c1b",
    "signer": "0x488C70acfD99ce455Baa5a0AC52De85516376179",
    "userId": "129704217"
  }
}