{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5fa782e9b49f1e21d73d32abc1c0c6d512c8738bfba226c069da566cf607476",
    "signature": "0xd10d9dc018a21c64f1abc641c78ee797d0c48131e52de5231382521402c7ce875debaa9a3f50c94b5b67183bf4299c5bcc6322f92a0522bb76d4997a00d4f9141c",
    "signer": "0xff6CFd78e41Ab6Dcc561c5550474bDBB3Af1A3A9",
    "userId": "444417991"
  }
}