{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa92cf263d5b2ab5ebb01b13d5d5bb9aa13d0db97f88cb68458abc0ba84b4c2a4",
    "signature": "0xa163bfadf8893f3fa7567b8f9fae5fb8eb151001ec30ffba9d342e6bd3492b885f75e68b9cbb3a8b9d68eaefb5c8fadcd6fc9f5ab2189ef999c2e3bddf025a4d1b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}