{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40a7ab85d063eefb89a42af7cf11804d7ce777c736abf259aeea593c32622d3b",
    "signature": "0xc5f420f3f686471a1676a3475e07b42ab4766fcf326a28c39826f2b0e95f4a4265260a1b1d2eb3cef42504307d9330e569032814b1391e3600b58ac86e7071491b",
    "signer": "0xF2B14f7338E3E630235E91078435a10c3ce57e84",
    "userId": "8893664"
  }
}